Rotational Motion AP Physics

A grindstone spinning at the rate of 8.3 rev/s has what approximate angular speed?

• 3.2 rad/s

• 26 rad/s

• 52.12 rad/s

• 81 rad/s

A 0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad/s to 11.0 rad/s. What is the wheel's average angular acceleration?

• 9.6 rad/s/s

• 4.8 rad/s/s

• 3.1 rad/s/s

• 1.63 rad/s/s

Which would have a greater tangential velocity?

• Kid near the center of the merry go round

• Kid near the outside of the merry go round

• neither

• Both kids have same tangential velocity

An object completes 1.5 circular orbits in half a minute. What is its approximate angular velocity?

• 0.05 rad/s

• 0.31 rad/s

• 0.5 rad/s

• 3 rad/s

Tags

NGSS.HS-ESS1-4

The rate at which a rotating object spins is called ____.

• linear motion

• angular velocity

• radians

• acceleration

What is torque?

• Torque is a measure of the linear force applied to an object.

• Torque is a unit of temperature measurement.

• Torque is a type of musical instrument.

• Torque is a measure of the force that tries to rotate around an axis

• angular displacement

• angular velocity

• angular acceleration

You feel "heaviest" at the ___ of a loop because normal force is ____ gravitational force.

• Top; Equal to

• Bottom; Equal to

• Top; Greater than

• Bottom; Greater than

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

If the answer to your calculation has units of rad/s², what type of quantity could it be?

• linear acceleration

• angular acceleration

• angular velocity

• angular momentum