# User:Guy vandegrift/Quizbank/Archive1/College Physics/I T2

## TrigPhys_I_T2sample

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### TrigPhys_I_T2sample-v1s1

1.
In the figure shown, the mass of m1 is 6.4 kg, and the mass of m2 is 3.7 kg. If the external force, Fext on m2 is 135 N, what is the tension in the connecting string? Assume no friction is present.
___a) 74.4 N
___b) 85.5 N
___c) 98.4 N
___d) 113.1 N
___e) 130.1 N

2. If you toss a coin into the air, the velocity while it as its highest point is

___ a) zero
___ b) down
___ c) up

3. A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The velocity vector points

___ a) north
___ b) northeast
___ c) northwest
___ d) northeast
___ e) southeast

4.
In the figure shown, θ1 is 19 degrees, and θ3 is 38 degrees. The tension T3 is 21 N. What is the tension, T1?
___a) 10.01 N.
___b) 11.51 N.
___c) 13.23 N.
___d) 15.22 N.
___e) 17.5 N.

5. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

___ a) east
___ b) south
___ c) north
___ d) zero
___ e) west

6. A merry-go round has a period of 0.36 minutes. What is the minimum coefficient of static friction that would allow a 67.1 kg person to stand1.19 meters from the center, without grabbing something?

___a) 0.006
___b) 0.007
___c) 0.008
___d) 0.009
___e) 0.01

7.
In the figure shown, θ1 is 20 degrees , and θ3 is 33 degrees . The mass has a weight of 31 N. What is the tension, T1?
___a) 32.55 N.
___b) 37.44 N.
___c) 43.05 N.
___d) 49.51 N.
___e) 56.94 N.

8. What is the gravitational acceleration on a plant that is 1.96 times more massive than Earth, and a radius that is 1.62 times greater than Earths?

___a) 4.8 m/s2
___b) 5.5 m/s2
___c) 6.4 m/s2
___d) 7.3 m/s2
___e) 8.4 m/s2

9. If you toss a coin into the air, the velocity on the way up is

___ a) up
___ b) zero
___ c) down

10. A car is traveling west and slowing down. The acceleration is

___ a) to the east
___ b) to the west
___ c) zero

11. A sled of mass 2.5 kg is on perfectly smooth surface. A string pulls with a tension of 17.7N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 3.1 m/s2?

___a) 48.4 degrees
___b) 55.7 degrees
___c) 64 degrees
___d) 73.6 degrees
___e) 84.7 degrees

12. A car is traveling east and speeding up. The acceleration is

___ a) to the east
___ b) zero
___ c) to the west

13. A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points

___ a) northeast
___ b) southwest
___ c) northwest
___ d) north
___ e) south

14. A 2.2 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.59 . In addition to the surface friction, there is also an air drag equal to 14 N. What is the magnitude (absolute value) of the acceleration?

___a) 6.9 m/s2.
___b) 8 m/s2.
___c) 9.2 m/s2.
___d) 10.6 m/s2.
___e) 12.1 m/s2.

15. A sled of mass 5.7 kg is at rest on a rough surface. A string pulls with a tension of 40.1N at an angle of 42 degress above the horizontal. What is the normal force?

___a) 29.03 N.
___b) 33.38 N.
___c) 38.39 N.
___d) 44.15 N.
___e) 50.77 N.

#### Key to TrigPhys_I_T2sample-v1s1

1.
In the figure shown, the mass of m1 is 6.4 kg, and the mass of m2 is 3.7 kg. If the external force, Fext on m2 is 135 N, what is the tension in the connecting string? Assume no friction is present.
-a) 74.4 N
+b) 85.5 N
-c) 98.4 N
-d) 113.1 N
-e) 130.1 N

2. If you toss a coin into the air, the velocity while it as its highest point is

+ a) zero
- b) down
- c) up

3. A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The velocity vector points

+ a) north
- b) northeast
- c) northwest
- d) northeast
- e) southeast

4.
In the figure shown, θ1 is 19 degrees, and θ3 is 38 degrees. The tension T3 is 21 N. What is the tension, T1?
-a) 10.01 N.
-b) 11.51 N.
-c) 13.23 N.
-d) 15.22 N.
+e) 17.5 N.

5. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

+ a) east
- b) south
- c) north
- d) zero
- e) west

6. A merry-go round has a period of 0.36 minutes. What is the minimum coefficient of static friction that would allow a 67.1 kg person to stand1.19 meters from the center, without grabbing something?

-a) 0.006
-b) 0.007
-c) 0.008
-d) 0.009
+e) 0.01

7.
In the figure shown, θ1 is 20 degrees , and θ3 is 33 degrees . The mass has a weight of 31 N. What is the tension, T1?
+a) 32.55 N.
-b) 37.44 N.
-c) 43.05 N.
-d) 49.51 N.
-e) 56.94 N.

8. What is the gravitational acceleration on a plant that is 1.96 times more massive than Earth, and a radius that is 1.62 times greater than Earths?

-a) 4.8 m/s2
-b) 5.5 m/s2
-c) 6.4 m/s2
+d) 7.3 m/s2
-e) 8.4 m/s2

9. If you toss a coin into the air, the velocity on the way up is

+ a) up
- b) zero
- c) down

10. A car is traveling west and slowing down. The acceleration is

+ a) to the east
- b) to the west
- c) zero

11. A sled of mass 2.5 kg is on perfectly smooth surface. A string pulls with a tension of 17.7N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 3.1 m/s2?

-a) 48.4 degrees
-b) 55.7 degrees
+c) 64 degrees
-d) 73.6 degrees
-e) 84.7 degrees

12. A car is traveling east and speeding up. The acceleration is

+ a) to the east
- b) zero
- c) to the west

13. A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points

- a) northeast
- b) southwest
+ c) northwest
- d) north
- e) south

14. A 2.2 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.59 . In addition to the surface friction, there is also an air drag equal to 14 N. What is the magnitude (absolute value) of the acceleration?

-a) 6.9 m/s2.
-b) 8 m/s2.
-c) 9.2 m/s2.
-d) 10.6 m/s2.
+e) 12.1 m/s2.

15. A sled of mass 5.7 kg is at rest on a rough surface. A string pulls with a tension of 40.1N at an angle of 42 degress above the horizontal. What is the normal force?

+a) 29.03 N.
-b) 33.38 N.
-c) 38.39 N.
-d) 44.15 N.
-e) 50.77 N.

### TrigPhys_I_T2sample-v2s1

1. If you toss a coin into the air, the velocity on the way up is

___ a) down
___ b) up
___ c) zero

2.
In the figure shown, the mass of m1 is 6.7 kg, and the mass of m2 is 2.5 kg. If the external force, Fext on m2 is 101 N, what is the tension in the connecting string? Assume no friction is present.
___a) 55.6 N
___b) 64 N
___c) 73.6 N
___d) 84.6 N
___e) 97.3 N

3. A sled of mass 5.7 kg is at rest on a rough surface. A string pulls with a tension of 40.1N at an angle of 42 degress above the horizontal. What is the normal force?

___a) 29.03 N.
___b) 33.38 N.
___c) 38.39 N.
___d) 44.15 N.
___e) 50.77 N.

4. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

___ a) north
___ b) south
___ c) east
___ d) west
___ e) zero

5. A 2.3 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.41 . In addition to the surface friction, there is also an air drag equal to 16 N. What is the magnitude (absolute value) of the acceleration?

___a) 7.2 m/s2.
___b) 8.3 m/s2.
___c) 9.5 m/s2.
___d) 11 m/s2.
___e) 12.6 m/s2.

6.
In the figure shown, θ1 is 16 degrees , and θ3 is 35 degrees . The mass has a 'weight' of 28 N. What is the tension, T1?
___a) 19.41 N.
___b) 22.32 N.
___c) 25.66 N.
___d) 29.51 N.
___e) 33.94 N.

7. A sled of mass 2.1 kg is on perfectly smooth surface. A string pulls with a tension of 17.7N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 3.6 m/s2?

___a) 56.3 degrees
___b) 64.7 degrees
___c) 74.4 degrees
___d) 85.6 degrees
___e) 98.4 degrees

8. A merry-go round has a period of 0.36 minutes. What is the minimum coefficient of static friction that would allow a 67.1 kg person to stand1.19 meters from the center, without grabbing something?

___a) 0.006
___b) 0.007
___c) 0.008
___d) 0.009
___e) 0.01

9. A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The velocity vector points

___ a) north
___ b) northwest
___ c) northeast
___ d) northeast
___ e) southeast

10. A car is traveling east and speeding up. The acceleration is

___ a) to the east
___ b) zero
___ c) to the west

11.
In the figure shown, θ1 is 20 degrees, and θ3 is 29 degrees. The tension T3 is 25 N. What is the tension, T1?
___a) 13.3 N.
___b) 15.3 N.
___c) 17.59 N.
___d) 20.23 N.
___e) 23.27 N.

12. What is the gravitational acceleration on a plant that is 2.59 times more massive than Earth, and a radius that is 1.75 times greater than Earths?

___a) 8.3 m/s2
___b) 9.5 m/s2
___c) 11 m/s2
___d) 12.6 m/s2
___e) 14.5 m/s2

13. If you toss a coin into the air, the velocity while it as its highest point is

___ a) zero
___ b) up
___ c) down

14. A car is traveling west and slowing down. The acceleration is

___ a) to the west
___ b) zero
___ c) to the east

15. A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points

___ a) south
___ b) north
___ c) southwest
___ d) northeast
___ e) northwest

#### Key to TrigPhys_I_T2sample-v2s1

1. If you toss a coin into the air, the velocity on the way up is

- a) down
+ b) up
- c) zero

2.
In the figure shown, the mass of m1 is 6.7 kg, and the mass of m2 is 2.5 kg. If the external force, Fext on m2 is 101 N, what is the tension in the connecting string? Assume no friction is present.
-a) 55.6 N
-b) 64 N
+c) 73.6 N
-d) 84.6 N
-e) 97.3 N

3. A sled of mass 5.7 kg is at rest on a rough surface. A string pulls with a tension of 40.1N at an angle of 42 degress above the horizontal. What is the normal force?

+a) 29.03 N.
-b) 33.38 N.
-c) 38.39 N.
-d) 44.15 N.
-e) 50.77 N.

4. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

- a) north
- b) south
+ c) east
- d) west
- e) zero

5. A 2.3 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.41 . In addition to the surface friction, there is also an air drag equal to 16 N. What is the magnitude (absolute value) of the acceleration?

-a) 7.2 m/s2.
-b) 8.3 m/s2.
-c) 9.5 m/s2.
+d) 11 m/s2.
-e) 12.6 m/s2.

6.
In the figure shown, θ1 is 16 degrees , and θ3 is 35 degrees . The mass has a 'weight' of 28 N. What is the tension, T1?
-a) 19.41 N.
-b) 22.32 N.
-c) 25.66 N.
+d) 29.51 N.
-e) 33.94 N.

7. A sled of mass 2.1 kg is on perfectly smooth surface. A string pulls with a tension of 17.7N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 3.6 m/s2?

-a) 56.3 degrees
+b) 64.7 degrees
-c) 74.4 degrees
-d) 85.6 degrees
-e) 98.4 degrees

8. A merry-go round has a period of 0.36 minutes. What is the minimum coefficient of static friction that would allow a 67.1 kg person to stand1.19 meters from the center, without grabbing something?

-a) 0.006
-b) 0.007
-c) 0.008
-d) 0.009
+e) 0.01

9. A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The velocity vector points

+ a) north
- b) northwest
- c) northeast
- d) northeast
- e) southeast

10. A car is traveling east and speeding up. The acceleration is

+ a) to the east
- b) zero
- c) to the west

11.
In the figure shown, θ1 is 20 degrees, and θ3 is 29 degrees. The tension T3 is 25 N. What is the tension, T1?
-a) 13.3 N.
-b) 15.3 N.
-c) 17.59 N.
-d) 20.23 N.
+e) 23.27 N.

12. What is the gravitational acceleration on a plant that is 2.59 times more massive than Earth, and a radius that is 1.75 times greater than Earths?

+a) 8.3 m/s2
-b) 9.5 m/s2
-c) 11 m/s2
-d) 12.6 m/s2
-e) 14.5 m/s2

13. If you toss a coin into the air, the velocity while it as its highest point is

+ a) zero
- b) up
- c) down

14. A car is traveling west and slowing down. The acceleration is

- a) to the west
- b) zero
+ c) to the east

15. A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points

- a) south
- b) north
- c) southwest
- d) northeast
+ e) northwest

### TrigPhys_I_T2sample-v1s2

1. A mass with weight (mg) of 27 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 70 degrees. What is the tension in the string?

___a) 12.5 N.
___b) 14.3 N.
___c) 16.5 N.
___d) 19 N.
___e) 21.8 N.

2. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

___ a) zero
___ b) north
___ c) south
___ d) west
___ e) east

3. A merry-go round has a period of 0.22 minutes. What is the minimum coefficient of static friction that would allow a 96.9 kg person to stand1.95 meters from the center, without grabbing something?

___a) 0.03
___b) 0.034
___c) 0.039
___d) 0.045
___e) 0.052

4. If you toss a coin into the air, the velocity while it as its highest point is

___ a) zero
___ b) up
___ c) down

5. If you toss a coin into the air, the acceleration on the way down is

___ a) up
___ b) down
___ c) zero

6. If you toss a coin into the air, the velocity on the way up is

___ a) down
___ b) zero
___ c) up

7. A sled of mass 2.6 kg is on perfectly smooth surface. A string pulls with a tension of 19.3N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 2.5 m/s2?

___a) 70.3 degrees
___b) 80.9 degrees
___c) 93 degrees
___d) 106.9 degrees
___e) 123 degrees

8. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

___ a) south
___ b) west
___ c) north
___ d) east
___ e) zero

9. If you toss a coin into the air, the velocity on the way down is

___ a) up
___ b) zero
___ c) down

10.
In the figure shown, θ1 is 20 degrees, and θ3 is 29 degrees. The tension T3 is 25 N. What is the tension, T1?
___a) 13.3 N.
___b) 15.3 N.
___c) 17.59 N.
___d) 20.23 N.
___e) 23.27 N.

11.
In the figure shown, the mass of m1 is 5.7 kg, and the mass of m2 is 2.5 kg. If the external force, Fext on m2 is 159 N, what is the tension in the connecting string? Assume that m1 has a kinetic coefficient of friction equal to 0.34, and that for m2 the coefficient is 0.46 .
___a) 82 N
___b) 94.3 N
___c) 108.5 N
___d) 124.8 N
___e) 143.5 N

12. What is the gravitational acceleration on a plant that is 1.73 times more dense than Earth, and a radius that is 2.44 times greater than Earth's?

___a) 41.4 m/s2
___b) 47.6 m/s2
___c) 54.7 m/s2
___d) 62.9 m/s2
___e) 72.4 m/s2

13. A sled of mass 5.4 kg is at rest on a rough surface. A string pulls with a tension of 46.6N at an angle of 38 degress above the horizontal. What is the magnitude of the friction?

___a) 36.72 N.
___b) 42.23 N.
___c) 48.56 N.
___d) 55.85 N.
___e) 64.23 N.

14.
In the figure shown, θ is 37 degrees, and the mass is 2.5 kg. What is T1?
___a) 32.5 N.
___b) 39 N.
___c) 46.8 N.
___d) 56.2 N.
___e) 67.4 N.

15. As the Moon circles Earth, the acceleration of the Moon is

___ a) away from Earth
___ b) in the same direction as the Moon's velocity
___ c) zero
___ d) opposite the direction of the Moon's velocity
___ e) towards Earth

#### Key to TrigPhys_I_T2sample-v1s2

1. A mass with weight (mg) of 27 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 70 degrees. What is the tension in the string?

-a) 12.5 N.
-b) 14.3 N.
+c) 16.5 N.
-d) 19 N.
-e) 21.8 N.

2. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

- a) zero
- b) north
- c) south
- d) west
+ e) east

3. A merry-go round has a period of 0.22 minutes. What is the minimum coefficient of static friction that would allow a 96.9 kg person to stand1.95 meters from the center, without grabbing something?

-a) 0.03
-b) 0.034
-c) 0.039
+d) 0.045
-e) 0.052

4. If you toss a coin into the air, the velocity while it as its highest point is

+ a) zero
- b) up
- c) down

5. If you toss a coin into the air, the acceleration on the way down is

- a) up
+ b) down
- c) zero

6. If you toss a coin into the air, the velocity on the way up is

- a) down
- b) zero
+ c) up

7. A sled of mass 2.6 kg is on perfectly smooth surface. A string pulls with a tension of 19.3N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 2.5 m/s2?

+a) 70.3 degrees
-b) 80.9 degrees
-c) 93 degrees
-d) 106.9 degrees
-e) 123 degrees

8. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

- a) south
+ b) west
- c) north
- d) east
- e) zero

9. If you toss a coin into the air, the velocity on the way down is

- a) up
- b) zero
+ c) down

10.
In the figure shown, θ1 is 20 degrees, and θ3 is 29 degrees. The tension T3 is 25 N. What is the tension, T1?
-a) 13.3 N.
-b) 15.3 N.
-c) 17.59 N.
-d) 20.23 N.
+e) 23.27 N.

11.
In the figure shown, the mass of m1 is 5.7 kg, and the mass of m2 is 2.5 kg. If the external force, Fext on m2 is 159 N, what is the tension in the connecting string? Assume that m1 has a kinetic coefficient of friction equal to 0.34, and that for m2 the coefficient is 0.46 .
-a) 82 N
-b) 94.3 N
+c) 108.5 N
-d) 124.8 N
-e) 143.5 N

12. What is the gravitational acceleration on a plant that is 1.73 times more dense than Earth, and a radius that is 2.44 times greater than Earth's?

+a) 41.4 m/s2
-b) 47.6 m/s2
-c) 54.7 m/s2
-d) 62.9 m/s2
-e) 72.4 m/s2

13. A sled of mass 5.4 kg is at rest on a rough surface. A string pulls with a tension of 46.6N at an angle of 38 degress above the horizontal. What is the magnitude of the friction?

+a) 36.72 N.
-b) 42.23 N.
-c) 48.56 N.
-d) 55.85 N.
-e) 64.23 N.

14.
In the figure shown, θ is 37 degrees, and the mass is 2.5 kg. What is T1?
+a) 32.5 N.
-b) 39 N.
-c) 46.8 N.
-d) 56.2 N.
-e) 67.4 N.

15. As the Moon circles Earth, the acceleration of the Moon is

- a) away from Earth
- b) in the same direction as the Moon's velocity
- c) zero
- d) opposite the direction of the Moon's velocity
+ e) towards Earth

### TrigPhys_I_T2sample-v2s2

1. If you toss a coin into the air, the velocity while it as its highest point is

___ a) up
___ b) down
___ c) zero

2. A sled of mass 2.6 kg is on perfectly smooth surface. A string pulls with a tension of 19.2N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 2.4 m/s2?

___a) 53.7 degrees
___b) 61.8 degrees
___c) 71 degrees
___d) 81.7 degrees
___e) 93.9 degrees

3. A mass with weight (mg) of 48 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 46 degrees. What is the tension in the string?

___a) 22.7 N.
___b) 26.1 N.
___c) 30 N.
___d) 34.5 N.
___e) 39.7 N.

4.
In the figure shown, the mass of m1 is 5.7 kg, and the mass of m2 is 2.5 kg. If the external force, Fext on m2 is 159 N, what is the tension in the connecting string? Assume that m1 has a kinetic coefficient of friction equal to 0.34, and that for m2 the coefficient is 0.46 .
___a) 82 N
___b) 94.3 N
___c) 108.5 N
___d) 124.8 N
___e) 143.5 N

5.
In the figure shown, θ1 is 15 degrees, and θ3 is 37 degrees. The tension T3 is 22 N. What is the tension, T1?
___a) 11.96 N.
___b) 13.75 N.
___c) 15.82 N.
___d) 18.19 N.
___e) 20.92 N.

6. A sled of mass 5.8 kg is at rest on a rough surface. A string pulls with a tension of 42.3N at an angle of 40 degress above the horizontal. What is the magnitude of the friction?

___a) 21.31 N.
___b) 24.5 N.
___c) 28.18 N.
___d) 32.4 N.
___e) 37.26 N.

7. If you toss a coin into the air, the acceleration on the way down is

___ a) zero
___ b) down
___ c) up

8. What is the gravitational acceleration on a plant that is 1.94 times more dense than Earth, and a radius that is 2.35 times greater than Earth's?

___a) 38.9 m/s2
___b) 44.7 m/s2
___c) 51.4 m/s2
___d) 59.1 m/s2
___e) 67.9 m/s2

9. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

___ a) west
___ b) north
___ c) east
___ d) south
___ e) zero

10. If you toss a coin into the air, the velocity on the way down is

___ a) down
___ b) zero
___ c) up

11. A merry-go round has a period of 0.34 minutes. What is the minimum coefficient of static friction that would allow a 51.4 kg person to stand3.09 meters from the center, without grabbing something?

___a) 0.017
___b) 0.02
___c) 0.023
___d) 0.026
___e) 0.03

12. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

___ a) west
___ b) south
___ c) zero
___ d) east
___ e) north

13. As the Moon circles Earth, the acceleration of the Moon is

___ a) zero
___ b) away from Earth
___ c) towards Earth
___ d) opposite the direction of the Moon's velocity
___ e) in the same direction as the Moon's velocity

14. If you toss a coin into the air, the velocity on the way up is

___ a) up
___ b) down
___ c) zero

15.
In the figure shown, θ is 21 degrees, and the mass is 3.1 kg. What is T1?
___a) 79.1 N.
___b) 95 N.
___c) 114 N.
___d) 136.8 N.
___e) 164.1 N.

#### Key to TrigPhys_I_T2sample-v2s2

1. If you toss a coin into the air, the velocity while it as its highest point is

- a) up
- b) down
+ c) zero

2. A sled of mass 2.6 kg is on perfectly smooth surface. A string pulls with a tension of 19.2N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 2.4 m/s2?

-a) 53.7 degrees
-b) 61.8 degrees
+c) 71 degrees
-d) 81.7 degrees
-e) 93.9 degrees

3. A mass with weight (mg) of 48 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 46 degrees. What is the tension in the string?

-a) 22.7 N.
+b) 26.1 N.
-c) 30 N.
-d) 34.5 N.
-e) 39.7 N.

4.
In the figure shown, the mass of m1 is 5.7 kg, and the mass of m2 is 2.5 kg. If the external force, Fext on m2 is 159 N, what is the tension in the connecting string? Assume that m1 has a kinetic coefficient of friction equal to 0.34, and that for m2 the coefficient is 0.46 .
-a) 82 N
-b) 94.3 N
+c) 108.5 N
-d) 124.8 N
-e) 143.5 N

5.
In the figure shown, θ1 is 15 degrees, and θ3 is 37 degrees. The tension T3 is 22 N. What is the tension, T1?
-a) 11.96 N.
-b) 13.75 N.
-c) 15.82 N.
+d) 18.19 N.
-e) 20.92 N.

6. A sled of mass 5.8 kg is at rest on a rough surface. A string pulls with a tension of 42.3N at an angle of 40 degress above the horizontal. What is the magnitude of the friction?

-a) 21.31 N.
-b) 24.5 N.
-c) 28.18 N.
+d) 32.4 N.
-e) 37.26 N.

7. If you toss a coin into the air, the acceleration on the way down is

- a) zero
+ b) down
- c) up

8. What is the gravitational acceleration on a plant that is 1.94 times more dense than Earth, and a radius that is 2.35 times greater than Earth's?

-a) 38.9 m/s2
+b) 44.7 m/s2
-c) 51.4 m/s2
-d) 59.1 m/s2
-e) 67.9 m/s2

9. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

+ a) west
- b) north
- c) east
- d) south
- e) zero

10. If you toss a coin into the air, the velocity on the way down is

+ a) down
- b) zero
- c) up

11. A merry-go round has a period of 0.34 minutes. What is the minimum coefficient of static friction that would allow a 51.4 kg person to stand3.09 meters from the center, without grabbing something?

-a) 0.017
-b) 0.02
-c) 0.023
-d) 0.026
+e) 0.03

12. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

- a) west
- b) south
- c) zero
+ d) east
- e) north

13. As the Moon circles Earth, the acceleration of the Moon is

- a) zero
- b) away from Earth
+ c) towards Earth
- d) opposite the direction of the Moon's velocity
- e) in the same direction as the Moon's velocity

14. If you toss a coin into the air, the velocity on the way up is

+ a) up
- b) down
- c) zero

15.
In the figure shown, θ is 21 degrees, and the mass is 3.1 kg. What is T1?
+a) 79.1 N.
-b) 95 N.
-c) 114 N.
-d) 136.8 N.
-e) 164.1 N.