Physics 11

Name: ___________________________ Elastic Potential Energy and Kinetic Energy

Previously, we learned that the amount of elastic potential energy stored in a stretched or compressed spring could be expressed as: Where x = amount of stretch of compression of the spring k = spring constant Ee =

Nonconservative Forces

Physics 11

Name: ___________________________

Example: A low-friction cart with a mass of 0.25 kg travels along a horizontal track and collides head on with a spring that has a spring constant of 155 N/m. If the spring was compressed by 6.0 cm, how fast was the cart initially travelling?

Example: A 1.2 kg dynamic cart is rolling to the right along a horizontal lab desk at 3.6 m/s, when it collides head on with a spring bumper that has a spring constant of 2.00 x 102 N/m. a) Determine the maximum compression of the spring.

b) Determine the speed of the cart at the moment that the spring was compressed 0.10m.

c) Determine the acceleration of the cart at the moment that the spring was compressed 0.10m.

Elastic Potential Energy and Kinetic Energy Notes and Worksheet ...

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