AP Physics 1 - Circular, Rotational, and Harmonic Motion

1

A satellite is rotating once per minute. It has an moment of inertia of $10,000 kg \cdot m^2$ . Erin, an astronaut, extends the satellite's solar panels, increasing its moment of inertia to $30,000 kg \cdot m^2$ . How quickly is the satellite now rotating?

2

A satellite is rotating once per minute. It has an moment of inertia of $10,000 kg \cdot m^2$ . Erin, an astronaut, extends the satellite's solar panels, increasing its moment of inertia to $30,000 kg \cdot m^2$ . How quickly is the satellite now rotating?

3

A satellite is rotating once per minute. It has an moment of inertia of $10,000 kg \cdot m^2$ . Erin, an astronaut, extends the satellite's solar panels, increasing its moment of inertia to $30,000 kg \cdot m^2$ . How quickly is the satellite now rotating?

4

A object moves in a circular motion with a diameter of . What is the magnitude of this object's velocity?

5

Consider the following system:

Spinning rod with masses at end

Two spherical masses, A and B, are attached to the end of a rigid rod with length l. The rod is attached to a fixed point, p, which is at a height, h, above the ground. The rod spins around the fixed point in a vertical circle that is traced in grey. $\angle c$ is the angle at which the rod makes with the horizontal at any given time ( $c=0^{\circ}$ in the figure).

If the maximum centripetal force felt by mass A is , what is the minimum centripetal force it feels? Neglect air resistance and internal friction.

$g = 10\frac{m}{s^2}$

6

A child is swinging a toy rocket around their head with a rope. If they double the frequency of "orbits", how will the tension in the rope change?

7

Pluto distance to sun: $1.43*10^{9}km$

Determine the centripetal acceleration of Pluto with respect to the Sun.

8

Terry is pushing a vertical lever that is attached to the floor, and he pushes above the point of rotation. If he pushes with a force of at an angle of $60^{\text o}$ from the ground, what is the magnitude of torque that he is applying to the lever's hinge?

9

I start pushing a merry-go-round with a torque of 10 Newton-meters. It has a moment of inertia of $100 kg \cdot m^2$ . What is its rotational speed after 3 seconds assuming it starts at rest?

10

I start pushing a merry-go-round with a torque of 10 Newton-meters. It has a moment of inertia of $100 kg \cdot m^2$ . What is its rotational speed after 3 seconds assuming it starts at rest?

Circular, Rotational, and Harmonic Motion

Practice Questions