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  1. AP Physics C Mechanics
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Rotation in AP Physics C: Mechanics

Question 1
college-boardPhysics C: MechanicsAPExam Style
1 mark

What happens to an initially stationary rigid body if only one unbalanced external force acts upon it?

Question 2
college-boardPhysics C: MechanicsAPExam Style
1 mark

Given a non-uniform bar of length LLL that is in rotational equilibrium while supported at two points AAA and BBB with BBB being at one end of the bar; if AAA supports three times more force than BBB, how far from BBB is point AAA located along the bar?

Question 3
college-boardPhysics C: MechanicsAPExam Style
1 mark

A carpenter uses a wrench to turn a bolt; knowing the bolt requires a tightening torque that is twice the carpenter can apply alone, what effect does doubling the length of the wrench have on the required force?

Question 4
college-boardPhysics C: MechanicsAPExam Style
1 mark

In terms of forces causing rotation, what does Στ=0\Sigma \tau = 0Στ=0 imply in static equilibrium for a rigid body?

Question 5
college-boardPhysics C: MechanicsAPExam Style
1 mark

A thin rod with length L pivoted at one end has two small masses attached at its opposite end; if one mass doubles while the other becomes zero, how does this change affect the system's moment of inertia about the pivot?

Question 6
college-boardPhysics C: MechanicsAPExam Style
1 mark

A solid cylinder and a hollow cylinder with the same mass and radius are rolling down an incline without slipping; which will reach the bottom first?

Question 7
college-boardPhysics C: MechanicsAPExam Style
1 mark

How much work is done by external forces holding in place a rod length L horizontally hinged at one end when it’s raised from horizontal position through angle θ given that rod’s mass m is uniformly distributed?

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Question 8
college-boardPhysics C: MechanicsAPExam Style
1 mark

If two particles, each with mass m, are attached at opposite ends of a rigid weightless rod of length L that is free to rotate in space about its center, how much force must be applied perpendicular to one particle to create an angular acceleration α\alphaα?

Question 9
college-boardPhysics C: MechanicsAPExam Style
1 mark

Which one of the following quantities is not affected by the choice of pivot point when calculating torque?

Question 10
college-boardPhysics C: MechanicsAPExam Style
1 mark

What physical quantity is obtained by integrating acceleration with respect to time?