Introduction to Circular Motion

Circular Motion Review

Including Angular Velocity/Radians

Thus, due to the direction of acceleration, the Centripetal Force is directed toward the center as well.

Multiple Choice

What does "circumference" mean?

• Space a circle takes up

• Distance around a circle

• Line from one side of a circle to another

• Line from center of circle to side

Multiple Choice

What is the formula for circumference of a circle given the radius?

• C = pi x r
• C = pi x 2r
• C = pi x D
• C = pi x 2D

Multiple Choice

Steven purchases a bowl. The diameter of the bowl is 14 cm. What is the circumference of the bowl?

• 28 cm

• 43.98 cm

• 87.96 cm

• 7 cm

Fill in the Blanks

Convert a linear velocity of 5 m/s to an angular velocity:

(Your answer will be in rad/s.)

Fill in the Blanks

For an object traveling in a circular path, having an angular velocity of 1/2 rad per second, how long will it take to complete one rotation?

(Your answer is in seconds.)

Fill in the Blanks

The period of an object traveling in a circular path is 12.6 seconds. What is the RPM value?

Fill in the Blanks

For the previous problem, the velocity of the wrecking ball is 9 m/s. The length of the cable is 23m. Determine the associated centripetal acceleration to the nearest hundredth:

Multiple Choice

In the previous crane/wrecking ball problem, the Tension Force is _____________ the Weight Force.

• Greater than

• Less than

• Equal to

Fill in the Blanks

Determine the force due to tension (in Newtons) for the last problem.