# Physics equations/04-Dynamics: Force and Newton's Laws/Q:forces/Testbank

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Study: http://en.wikiversity.org/wiki/Physics_equations/Sheet/All_chapters

## Contents

## a04DynForce Newton_forces_v1[edit]

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===2=== {<!--a04DynForce Newton_forces_1-->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 30 degrees. What is the tension in the string?} +a) 24.8 N. -b) 28.6 N. -c) 32.9 N. -d) 37.8 N. -e) 43.5 N. ===3=== {<!--a04DynForce Newton_forces_1-->A mass with weight (mg) of 37 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 44 degrees. What is the tension in the string?} -a) 11.4 N. -b) 13.1 N. -c) 15.1 N. -d) 17.4 N. +e) 20 N. ===4=== {<!--a04DynForce Newton_forces_1-->A mass with weight (mg) of 42 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) 15 N. -b) 17.3 N. -c) 19.8 N. +d) 22.8 N. -e) 26.2 N. ===5=== {<!--a04DynForce Newton_forces_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. ===6=== {<!--a04DynForce Newton_forces_1-->A mass with weight (mg) of 32 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) 12.8 N. -b) 14.8 N. -c) 17 N. +d) 19.5 N. -e) 22.5 N. ===7=== {<!--a04DynForce Newton_forces_1-->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. ===8=== {<!--a04DynForce Newton_forces_1-->A mass with weight (mg) of 49 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 54 degrees. What is the tension in the string?} +a) 27.5 N. -b) 31.6 N. -c) 36.4 N. -d) 41.8 N. -e) 48.1 N. ===9=== {<!--a04DynForce Newton_forces_1-->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. ===10=== {<!--a04DynForce Newton_forces_1-->A mass with weight (mg) of 32 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 40 degrees. What is the tension in the string?} -a) 11.2 N. -b) 12.9 N. -c) 14.8 N. +d) 17 N. -e) 19.6 N. |

## a04DynForce Newton_forces_v1[edit]

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===2=== {<!--a04DynForce Newton_forces_2-->A mass with weight (mg) equal to 29 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 60 degrees with respect to the horizontal. What is the tension in each string?} -a) 12.7 N. -b) 14.6 N. +c) 16.7 N. -d) 19.3 N. -e) 22.1 N. ===3=== {<!--a04DynForce Newton_forces_2-->A mass with weight (mg) equal to 34 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 14 degrees with respect to the horizontal. What is the tension in each string?} -a) 61.1 N. +b) 70.3 N. -c) 80.8 N. -d) 92.9 N. -e) 106.9 N. ===4=== {<!--a04DynForce Newton_forces_2-->A mass with weight (mg) equal to 42 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 26 degrees with respect to the horizontal. What is the tension in each string?} -a) 27.4 N. -b) 31.5 N. -c) 36.2 N. -d) 41.7 N. +e) 47.9 N. ===5=== {<!--a04DynForce Newton_forces_2-->A mass with weight (mg) equal to 41 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 30 degrees with respect to the horizontal. What is the tension in each string?} -a) 23.4 N. -b) 27 N. -c) 31 N. -d) 35.7 N. +e) 41 N. ===6=== {<!--a04DynForce Newton_forces_2-->A mass with weight (mg) equal to 33 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 72 degrees with respect to the horizontal. What is the tension in each string?} -a) 9.9 N. -b) 11.4 N. -c) 13.1 N. -d) 15.1 N. +e) 17.3 N. ===7=== {<!--a04DynForce Newton_forces_2-->A mass with weight (mg) equal to 44 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 60 degrees with respect to the horizontal. What is the tension in each string?} -a) 14.5 N. -b) 16.7 N. -c) 19.2 N. -d) 22.1 N. +e) 25.4 N. ===8=== {<!--a04DynForce Newton_forces_2-->A mass with weight (mg) equal to 21 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 66 degrees with respect to the horizontal. What is the tension in each string?} -a) 6.6 N. -b) 7.6 N. -c) 8.7 N. -d) 10 N. +e) 11.5 N. ===9=== {<!--a04DynForce Newton_forces_2-->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. ===10=== {<!--a04DynForce Newton_forces_2-->A mass with weight (mg) equal to 37 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 65 degrees with respect to the horizontal. What is the tension in each string?} -a) 15.4 N. -b) 17.7 N. +c) 20.4 N. -d) 23.5 N. -e) 27 N. |

## a04DynForce Newton_forces_v1[edit]

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===2=== {<!--a04DynForce Newton_forces_3-->A 2.1 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.46 . 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) 6.4 m/s<sup>2</sup>. -b) 7.3 m/s<sup>2</sup>. -c) 8.4 m/s<sup>2</sup>. -d) 9.7 m/s<sup>2</sup>. +e) 11.2 m/s<sup>2</sup>. ===3=== {<!--a04DynForce Newton_forces_3-->A 3 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.27 . In addition to the surface friction, there is also an air drag equal to 7 N. What is the magnitude (absolute value) of the acceleration?} -a) 3.8 m/s<sup>2</sup>. -b) 4.3 m/s<sup>2</sup>. +c) 5 m/s<sup>2</sup>. -d) 5.7 m/s<sup>2</sup>. -e) 6.6 m/s<sup>2</sup>. ===4=== {<!--a04DynForce Newton_forces_3-->A 2.4 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.68 . In addition to the surface friction, there is also an air drag equal to 6 N. What is the magnitude (absolute value) of the acceleration?} +a) 9.2 m/s<sup>2</sup>. -b) 10.5 m/s<sup>2</sup>. -c) 12.1 m/s<sup>2</sup>. -d) 13.9 m/s<sup>2</sup>. -e) 16 m/s<sup>2</sup>. ===5=== {<!--a04DynForce Newton_forces_3-->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/s<sup>2</sup>. -b) 8 m/s<sup>2</sup>. -c) 9.2 m/s<sup>2</sup>. -d) 10.6 m/s<sup>2</sup>. +e) 12.1 m/s<sup>2</sup>. ===6=== {<!--a04DynForce Newton_forces_3-->A 2.5 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 11 N. What is the magnitude (absolute value) of the acceleration?} -a) 7.3 m/s<sup>2</sup>. +b) 8.4 m/s<sup>2</sup>. -c) 9.7 m/s<sup>2</sup>. -d) 11.1 m/s<sup>2</sup>. -e) 12.8 m/s<sup>2</sup>. ===7=== {<!--a04DynForce Newton_forces_3-->A 3.8 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.6 . In addition to the surface friction, there is also an air drag equal to 20 N. What is the magnitude (absolute value) of the acceleration?} -a) 6.4 m/s<sup>2</sup>. -b) 7.3 m/s<sup>2</sup>. -c) 8.4 m/s<sup>2</sup>. -d) 9.7 m/s<sup>2</sup>. +e) 11.1 m/s<sup>2</sup>. ===8=== {<!--a04DynForce Newton_forces_3-->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/s<sup>2</sup>. +b) 9.4 m/s<sup>2</sup>. -c) 10.8 m/s<sup>2</sup>. -d) 12.4 m/s<sup>2</sup>. -e) 14.3 m/s<sup>2</sup>. ===9=== {<!--a04DynForce Newton_forces_3-->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/s<sup>2</sup>. -b) 8.3 m/s<sup>2</sup>. -c) 9.5 m/s<sup>2</sup>. +d) 11 m/s<sup>2</sup>. -e) 12.6 m/s<sup>2</sup>. ===10=== {<!--a04DynForce Newton_forces_3-->A 3.1 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.43 . In addition to the surface friction, there is also an air drag equal to 12 N. What is the magnitude (absolute value) of the acceleration?} -a) 4.6 m/s<sup>2</sup>. -b) 5.3 m/s<sup>2</sup>. -c) 6.1 m/s<sup>2</sup>. -d) 7 m/s<sup>2</sup>. +e) 8.1 m/s<sup>2</sup>. |

## a04DynForce Newton_forces_v1[edit]

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===2=== {<!--a04DynForce Newton_forces_4-->A mass with weight (mg) 5.3 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 3.05 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? } -a) 0.34 -b) 0.4 -c) 0.49 -d) 0.58 +e) 0.7 ===3=== {<!--a04DynForce Newton_forces_4-->A mass with weight (mg) 8.7 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 4.08 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? } -a) 0.31 -b) 0.37 -c) 0.44 +d) 0.53 -e) 0.64 ===4=== {<!--a04DynForce Newton_forces_4-->A mass with weight (mg) 7.9 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 1.64 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? } -a) 0.1 -b) 0.12 -c) 0.14 -d) 0.17 +e) 0.2 ===5=== {<!--a04DynForce Newton_forces_4-->A mass with weight (mg) 10.8 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 4.53 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? } -a) 0.38 +b) 0.46 -c) 0.55 -d) 0.66 -e) 0.79 ===6=== {<!--a04DynForce Newton_forces_4-->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 ===7=== {<!--a04DynForce Newton_forces_4-->A mass with weight (mg) 6.8 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 2.5 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? } -a) 0.19 -b) 0.23 -c) 0.27 -d) 0.33 +e) 0.39 ===8=== {<!--a04DynForce Newton_forces_4-->A mass with weight (mg) 6 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 3.2 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? } -a) 0.52 +b) 0.63 -c) 0.76 -d) 0.91 -e) 1.09 ===9=== {<!--a04DynForce Newton_forces_4-->A mass with weight (mg) 8.9 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 5.12 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? } +a) 0.7 -b) 0.84 -c) 1.01 -d) 1.21 -e) 1.45 ===10=== {<!--a04DynForce Newton_forces_4-->A mass with weight (mg) 8.7 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 4.08 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? } -a) 0.44 +b) 0.53 -c) 0.64 -d) 0.76 -e) 0.92 |