# User:Guy vandegrift/Quizbank/Archive1/College Physics/I T2study

## TrigPhys_I_T2_Study

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This document contains either a study guide OR pairs of exams taken from the same exam bank
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### TrigPhys_I_T2_Study-v1s1

1. When a table cloth is quickly pulled out from under dishes, they hardly move. This is because

___ a) the cloth is more slippery when it is pulled quickly
___ b) the cloth is accelerating for such a brief time that there is little motion
___ c) objects don't begin to accelerate until after the force has been applied

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

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

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

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

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

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

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

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

6. 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) northwest
___ b) north
___ c) northeast
___ d) south
___ e) southwest

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

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

8. 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) northeast
___ b) southeast
___ c) northeast
___ d) north
___ e) northwest

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

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

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

___ a) southwest
___ b) northwest
___ c) west
___ d) southeast
___ e) south

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

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

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

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

13. A car is traveling east and slowing down. The acceleration is

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

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

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

15. If you toss a coin into the air, the acceleration on the way up is

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

16. 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

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

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

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

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

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

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

20. A mass with weight (mg) of 39 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 56 degrees. What is the tension in the string?

___a) 22.1 N.
___b) 25.4 N.
___c) 29.2 N.
___d) 33.6 N.
___e) 38.6 N.

21. A mass with weight (mg) equal to 42 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 59 degrees with respect to the horizontal. What is the tension in each string?

___a) 21.3 N.
___b) 24.5 N.
___c) 28.2 N.
___d) 32.4 N.
___e) 37.3 N.

22. A 3.2 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.29 . In addition to the surface friction, there is also an air drag equal to 21 N. What is the magnitude (absolute value) of the acceleration?

___a) 8.2 m/s2.
___b) 9.4 m/s2.
___c) 10.8 m/s2.
___d) 12.4 m/s2.
___e) 14.3 m/s2.

23. A mass with weight (mg) 11 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 2.77 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?

___a) 0.12
___b) 0.14
___c) 0.17
___d) 0.21
___e) 0.25

24. A sled of mass 5.9 kg is at rest on a rough surface. A string pulls with a tension of 43.7N at an angle of 41 degress above the horizontal. What is the magnitude of the friction?

___a) 24.94 N.
___b) 28.68 N.
___c) 32.98 N.
___d) 37.93 N.
___e) 43.62 N.

25. A sled of mass 5.8 kg is at rest on a rough surface. A string pulls with a tension of 41.9N at an angle of 42 degress above the horizontal. What is the normal force?

___a) 18.94 N.
___b) 21.78 N.
___c) 25.05 N.
___d) 28.8 N.
___e) 33.12 N.

26. A sled of mass 5.5 kg is at rest on a perfectly smooth surface. A string pulls with a tension of 40.3N at an angle of 43 degress above the horizontal. How long will it take to reach a speed of 9 m/s?

___a) 1.27 s
___b) 1.46 s
___c) 1.68 s
___d) 1.93 s
___e) 2.22 s

27. A sled of mass 2.2 kg is on perfectly smooth surface. A string pulls with a tension of 17.2N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 3.5 m/s2?

___a) 36.3 degrees
___b) 41.7 degrees
___c) 47.9 degrees
___d) 55.1 degrees
___e) 63.4 degrees

28.
In the figure shown, θ1 is 18 degrees, and θ3 is 35 degrees. The tension T3 is 48 N. What is the tension, T1?
___a) 31.26 N.
___b) 35.95 N.
___c) 41.34 N.
___d) 47.54 N.
___e) 54.68 N.

29. In the figure "3 tensions" shown above θ1 is 16 degrees, and θ3 is 30 degrees. The tension T3 is 45 N. What is the weight?

___a) 25.5 N.
___b) 29.3 N.
___c) 33.7 N.
___d) 38.7 N.
___e) 44.5 N.

30.
In the figure shown, θ is 36 degrees, and the mass is 3.1 kg. What is T2?
___a) 39.08 N.
___b) 44.94 N.
___c) 51.69 N.
___d) 59.44 N.
___e) 68.35 N.

31.
In the figure shown, θ is 33 degrees, and the mass is 2.7 kg. What is T1?
___a) 40.7 N.
___b) 48.9 N.
___c) 58.7 N.
___d) 70.4 N.
___e) 84.5 N.

32.
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.

33.
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

34.
In the figure shown (with m1 = 5.1 kg, m2 = 2.8 kg, and Fext = 148 N), what is the acceleration? Assume no friction is present.
___a) 14.2 m/s2
___b) 16.3 m/s2
___c) 18.7 m/s2
___d) 21.5 m/s2
___e) 24.8 m/s2

35. Nine barefoot baseball players, with a total mass of 679 kg plays tug of war against five basketball players wearing shoes that provide a static coefficient of friction of 0.61 . The net mass of the (shoed) basketball team is 380 kg. What is the maximum coefficient of the barefoot boys if they lose?

___a) 0.31
___b) 0.341
___c) 0.376
___d) 0.413
___e) 0.454

36. Without their shoes, members of a 9 person baseball team have a coefficient of static friction of only 0.23 . But the team wins a game of tug of war due to their superior mass of 607 kg. They are playing against a 5 person basketball team with a net mass of 429 kg. What is the maximum coefficient of static friction of the basketball team?

___a) 0.269
___b) 0.296
___c) 0.325
___d) 0.358
___e) 0.394

37.
In the figure shown, the mass of m1 is 5.2 kg, and the mass of m2 is 2.9 kg. If the external force, Fext on m2 is 179 N, what is the tension in the connecting string? Assume that m1 has a kinetic coefficient of friction equal to 0.36, and that for m2 the coefficient is 0.46 .
___a) 74.4 N
___b) 85.5 N
___c) 98.3 N
___d) 113.1 N
___e) 130.1 N

38. A merry-go-round has an angular frequency, ${\displaystyle \omega }$, equal to 0.198 rad/sec. How many minutes does it take to complete 10.5 revolutions?

___a) 4.83 minutes.
___b) 5.55 minutes.
___c) 6.39 minutes.
___d) 7.34 minutes.
___e) 8.45 minutes.

39. A merry-go round has a period of 0.38 minutes. What is the centripetal force on a 64.8 kg person who is standing 1.76 meters from the center?

___a) 5 newtons.
___b) 5.7 newtons.
___c) 6.5 newtons.
___d) 7.5 newtons.
___e) 8.7 newtons.

40. A merry-go round has a period of 0.32 minutes. What is the minimum coefficient of static friction that would allow a 88.1 kg person to stand1.73 meters from the center, without grabbing something?

___a) 0.019
___b) 0.022
___c) 0.025
___d) 0.029
___e) 0.033

41. What is the gravitational acceleration on a plant that is 1.34 times more massive than Earth, and a radius that is 1.88 times greater than Earths?

___a) 2.4 m/s2
___b) 2.8 m/s2
___c) 3.2 m/s2
___d) 3.7 m/s2
___e) 4.3 m/s2

42. What is the gravitational acceleration on a plant that is 1.47 times more dense than Earth, and a radius that is 1.42 times greater than Earth's?

___a) 20.5 m/s2
___b) 23.5 m/s2
___c) 27.1 m/s2
___d) 31.1 m/s2
___e) 35.8 m/s2

#### Key to TrigPhys_I_T2_Study-v1s1

1. When a table cloth is quickly pulled out from under dishes, they hardly move. This is because

- a) the cloth is more slippery when it is pulled quickly
+ b) the cloth is accelerating for such a brief time that there is little motion
- c) objects don't begin to accelerate until after the force has been applied

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

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

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

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

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

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

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

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

6. 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) northwest
- b) north
- c) northeast
- d) south
- e) southwest

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

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

8. 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) northeast
- b) southeast
- c) northeast
+ d) north
- e) northwest

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

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

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

+ a) southwest
- b) northwest
- c) west
- d) southeast
- e) south

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

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

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

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

13. A car is traveling east and slowing down. The acceleration is

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

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

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

15. If you toss a coin into the air, the acceleration on the way up is

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

16. 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

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

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

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

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

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

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

20. A mass with weight (mg) of 39 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 56 degrees. What is the tension in the string?

+a) 22.1 N.
-b) 25.4 N.
-c) 29.2 N.
-d) 33.6 N.
-e) 38.6 N.

21. A mass with weight (mg) equal to 42 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 59 degrees with respect to the horizontal. What is the tension in each string?

-a) 21.3 N.
+b) 24.5 N.
-c) 28.2 N.
-d) 32.4 N.
-e) 37.3 N.

22. A 3.2 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.29 . In addition to the surface friction, there is also an air drag equal to 21 N. What is the magnitude (absolute value) of the acceleration?

-a) 8.2 m/s2.
+b) 9.4 m/s2.
-c) 10.8 m/s2.
-d) 12.4 m/s2.
-e) 14.3 m/s2.

23. A mass with weight (mg) 11 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 2.77 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?

-a) 0.12
-b) 0.14
-c) 0.17
-d) 0.21
+e) 0.25

24. A sled of mass 5.9 kg is at rest on a rough surface. A string pulls with a tension of 43.7N at an angle of 41 degress above the horizontal. What is the magnitude of the friction?

-a) 24.94 N.
-b) 28.68 N.
+c) 32.98 N.
-d) 37.93 N.
-e) 43.62 N.

25. A sled of mass 5.8 kg is at rest on a rough surface. A string pulls with a tension of 41.9N at an angle of 42 degress above the horizontal. What is the normal force?

-a) 18.94 N.
-b) 21.78 N.
-c) 25.05 N.
+d) 28.8 N.
-e) 33.12 N.

26. A sled of mass 5.5 kg is at rest on a perfectly smooth surface. A string pulls with a tension of 40.3N at an angle of 43 degress above the horizontal. How long will it take to reach a speed of 9 m/s?

-a) 1.27 s
-b) 1.46 s
+c) 1.68 s
-d) 1.93 s
-e) 2.22 s

27. A sled of mass 2.2 kg is on perfectly smooth surface. A string pulls with a tension of 17.2N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 3.5 m/s2?

-a) 36.3 degrees
-b) 41.7 degrees
-c) 47.9 degrees
-d) 55.1 degrees
+e) 63.4 degrees

28.
In the figure shown, θ1 is 18 degrees, and θ3 is 35 degrees. The tension T3 is 48 N. What is the tension, T1?
-a) 31.26 N.
-b) 35.95 N.
+c) 41.34 N.
-d) 47.54 N.
-e) 54.68 N.

29. In the figure "3 tensions" shown above θ1 is 16 degrees, and θ3 is 30 degrees. The tension T3 is 45 N. What is the weight?

-a) 25.5 N.
-b) 29.3 N.
+c) 33.7 N.
-d) 38.7 N.
-e) 44.5 N.

30.
In the figure shown, θ is 36 degrees, and the mass is 3.1 kg. What is T2?
-a) 39.08 N.
-b) 44.94 N.
+c) 51.69 N.
-d) 59.44 N.
-e) 68.35 N.

31.
In the figure shown, θ is 33 degrees, and the mass is 2.7 kg. What is T1?
+a) 40.7 N.
-b) 48.9 N.
-c) 58.7 N.
-d) 70.4 N.
-e) 84.5 N.

32.
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.

33.
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

34.
In the figure shown (with m1 = 5.1 kg, m2 = 2.8 kg, and Fext = 148 N), what is the acceleration? Assume no friction is present.
-a) 14.2 m/s2
-b) 16.3 m/s2
+c) 18.7 m/s2
-d) 21.5 m/s2
-e) 24.8 m/s2

35. Nine barefoot baseball players, with a total mass of 679 kg plays tug of war against five basketball players wearing shoes that provide a static coefficient of friction of 0.61 . The net mass of the (shoed) basketball team is 380 kg. What is the maximum coefficient of the barefoot boys if they lose?

-a) 0.31
+b) 0.341
-c) 0.376
-d) 0.413
-e) 0.454

36. Without their shoes, members of a 9 person baseball team have a coefficient of static friction of only 0.23 . But the team wins a game of tug of war due to their superior mass of 607 kg. They are playing against a 5 person basketball team with a net mass of 429 kg. What is the maximum coefficient of static friction of the basketball team?

-a) 0.269
-b) 0.296
+c) 0.325
-d) 0.358
-e) 0.394

37.
In the figure shown, the mass of m1 is 5.2 kg, and the mass of m2 is 2.9 kg. If the external force, Fext on m2 is 179 N, what is the tension in the connecting string? Assume that m1 has a kinetic coefficient of friction equal to 0.36, and that for m2 the coefficient is 0.46 .
-a) 74.4 N
-b) 85.5 N
-c) 98.3 N
+d) 113.1 N
-e) 130.1 N

38. A merry-go-round has an angular frequency, ${\displaystyle \omega }$, equal to 0.198 rad/sec. How many minutes does it take to complete 10.5 revolutions?

-a) 4.83 minutes.
+b) 5.55 minutes.
-c) 6.39 minutes.
-d) 7.34 minutes.
-e) 8.45 minutes.

39. A merry-go round has a period of 0.38 minutes. What is the centripetal force on a 64.8 kg person who is standing 1.76 meters from the center?

-a) 5 newtons.
-b) 5.7 newtons.
-c) 6.5 newtons.
-d) 7.5 newtons.
+e) 8.7 newtons.

40. A merry-go round has a period of 0.32 minutes. What is the minimum coefficient of static friction that would allow a 88.1 kg person to stand1.73 meters from the center, without grabbing something?

+a) 0.019
-b) 0.022
-c) 0.025
-d) 0.029
-e) 0.033

41. What is the gravitational acceleration on a plant that is 1.34 times more massive than Earth, and a radius that is 1.88 times greater than Earths?

-a) 2.4 m/s2
-b) 2.8 m/s2
-c) 3.2 m/s2
+d) 3.7 m/s2
-e) 4.3 m/s2

42. What is the gravitational acceleration on a plant that is 1.47 times more dense than Earth, and a radius that is 1.42 times greater than Earth's?

+a) 20.5 m/s2
-b) 23.5 m/s2
-c) 27.1 m/s2
-d) 31.1 m/s2
-e) 35.8 m/s2