Pendulums and Periodic Motion

When we're talking about a pendulum, what does T stand for?

• pi

• period

• length

• gravity

What is the unit for the period of a pendulum?

• second

• meter

• m/s/s

• Newton

As a pendulum gets longer, what happens to the period?

• doesn't change

• decreases

• increases

What is the name of the mass on a pendulum?

• ion

• graviton

• oscillating mass

• bob

At what point in the swing of a pendulum is the bob moving fastest?

• at the top of the arc

• at the bottom of the arc

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of these does not affect the period of a pendulum?

• length

• gravity

• mass

Which would have the longest period?

Pendulum A: A 200-g mass attached to a 1.0-m length string

Pendulum B: A 400-g mass attached to a 0.5-m length string

• A

• B

• Same

Your Mom wishes to make a simple pendulum that serves as a timing device. She plans to make it such that its period is 1.00 second. What length must the pendulum have? (Useful formulas are on the board)

• 1 m

• .5 m

• .25 m

• More than 1 meter

Batman and Robin swing from ropes attached to a large elevated platform. Suppose that they can be treated as a simple pendulum with a length of 16 m. Determine the period for one complete back and forth cycle. (Useful formulas are on the board)

• 16 s

• 4 s

• 8 s

• 6 s

True/False: The time for a complete back-and-forth swing of a pendulum is its frequency.

• True
• False