A roller-coaster car with a mass of 1200 kg starts at rest from a point 20 m
Question:
A roller-coaster car with a mass of 1200 kg starts at rest from a point 20 m above the ground. At point B, it is 12 m above the ground.
a. What is the initial potential energy of the car?
b. What is the potential energy at point B?
c. If the initial kinetic energy was zero and the work done against friction between the starting point and point B is 30 000 J, what is the kinetic energy of the car at point B?
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Diagram for the condition given Let PE at ground be ...View the full answer
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Siddhant Sinha
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Related Book For 
Physics of Everyday Phenomena A conceptual Introduction to physics
ISBN: 978-0073512112
6th edition
Authors: W. Thomas Griffith, Juliet W. Brosing
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