Need help for last problem in homework

Thread starter slcxow
Start date Nov 1, 2012
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The problem involves a 1200 kg roller coaster starting from rest at a height of 19 m and reaching a height of 11 m. Using the conservation of energy principle, the potential energy at the starting height is converted into kinetic energy as it descends. The potential energy at 19 m is calculated as 22680 J, and at 11 m, it is 13200 J. The difference in potential energy gives the kinetic energy at the 11 m height, which is 9480 J. This approach effectively demonstrates the application of energy conservation in solving the problem.

Nov 1, 2012

slcxow

I was able to solve all my other problems for homework but I'm having problems with this one.
Any help would be appreciated. Thanks

A 1200 kg frictionless roller coaster starts from rest at a height of 19 m. What is its kinetic energy when it goes over a hill that is 11 m high?

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Nov 1, 2012

oldspice1212

Hint: Conservation of energy

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