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Unformatted text preview: spension springs of the car have a spring
constant of 110,000 N/m and can compress a maximum distance of 0.4m. The mass of the car is
1200 kg. What is the maximum value of h that the car can tolerate before bottoming out?
All of the gravitational potential energy becomes spring potential energy when the car enters the
pothole. Because the gravitational potential energy changes as the spring compresses vertically,
the height that should be used for the change in gravitational potential energy is the sum of the
height of the pothole and the amount the spring is compressed. Equating this value with the
expression for spring potential energy, you can solve for the spring compression. You should
obtain a compression of 0.35 m. Physics 211 Week 8 Momentum: SkateBoard Exhibition
You are helping your friend prepare for his skateboard clowning stunt. For his program, he
plans to take a running start, then jump onto a gigantic 7kg stationary skateboard. He and the
skateboard will glide in a straight line along a short, level section of track, then up a sloped
concrete wall. He has me...
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 Spring '09
 TonyLiss
 Energy

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