AP Physics Mechanics of Rotation

By what factor will the kinetic energy of an object increase if the velocity of the object is tripled?

• The kinetic energy will stay the same.

• 3

• 6

• 9

A circular object of radius R has an angular velocity of k rad/s. The angular velocity at a point R/2 is:

• 2k rad/s

• k/2 rad/s

• k² rad/s

• k rad/s

A kg-m²/s² is otherwise known as a(n)

• Newton

• Joule

• Watt

• Displacement

Tags

NGSS.HS-PS2-1

If the gravitational force between two masses is F, then by what factor would the distance between the two object need to change if the mass of one of the objects is doubled in order for the force to remain the same?

• 4

• 2

• 2^1/2

• 6^1/2

Tags

NGSS.HS-PS2-4

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

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

• linear motion

• angular velocity

• radians

• acceleration

A force in a circular direction

• Reciprocating

• Torque

• Speed

• Oscillating

Harry Potter waved his .23 m wand with .069 Nm of torque. How much force did Harry apply to rotate his wand?

• .4

• .5

• .3

• .16

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

The time taken for one complete circuit is called the... 

• Period

• Frequency 

• Angular velocity

Tags

NGSS.HS-PS4-1