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Engineering Mechanics - KOP: Work and Energy - Discussion

Discussion Forum : KOP: Work and Energy - General Questions (Q.No. 6)
KOP: Work and Energy
6.

The roller-coaster car has a speed of 15 ft/s when it is at the crest of a vertical parabolic track. Compute the velocity and the normal force it exerts on the track when it reaches point B. Neglect friction and the mass of the wheels. The total weight of the car and the passengers is 350 lb.

vB = 114.5 ft/s, NB = 29.1 lb
vB = 114.5 ft/s, NB = 284 lb
vB = 114.5 ft/s, NB = 156.5 lb
vB = 114.5 ft/s, NB = 440 lb
Answer: Option
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