Elastic Potential Energy

Elastic Potential
Energy

Multiple Choice

A child jumps on a trampoline. When will the trampoline

have more elastic potential energy?

• When the child is standing on the trampoline

• When the child is in the air

• When the child lands on the trampoline after

  jumping

• The trampoline will always have the same elastic

  potential energy

Multiple Choice

A child bouncing on a pogo stick compresses the spring

by 0.25 m. If the spring constant of the spring on the

bottom of the pogo stick is 200 N/m, what is the elastic

potential energy stored in the spring when it is

compressed?

• 25 J

• 6.25 J

• 2.50 J

• 12.5 J

Multiple Choice

A rubber band with a spring constant of 40 N/m is pulled

back 0.5 m. How much elastic potential energy is stored

in the elastic band?

• 10 J

• 5 J

• 20 J

• 25 J

Multiple Choice

Which of the following would you expect to have the

smallest spring constant?

• a garage door spring

• a slinky

• a spring in a pen

• a trampoline spring

Multiple Choice

If the spring constant, k, is tripled, by what factor does

the EPE increase?

• 3

• 9

• 12

• 15

Multiple Choice

If the spring constant, k, is halved, by what factor does

the EPE decrease?

• 0.5

• 0.25

• 0.125

• 0.006

Multiple Choice

If the distance a spring is stretched is increased by a

factor of 6, by what factor is the EPE increased?

• 12

• 6

• 36

• 3