7- A 150 kg roller coaster car starts from rest at point A and slides down the frictionless loop-the-loop shown. What is the normal force (in N) on the car by the track at point B? a- 500N b- 1500N c-1000N d-2500N 12 m 8. A block slides along a rough incline. Its total mechanical energy (E) and potential energy (U) respectively at point A are (70 J and 50 J) and at point B are (40 J and 40 J). The work done by the frictional force on the block between points A and B is: a) 10 J b) - 40 J c) - 20 J d) - 30 J B A
7- A 150 kg roller coaster car starts from rest at point A and slides down the frictionless loop-the-loop shown. What is the normal force (in N) on the car by the track at point B? a- 500N b- 1500N c-1000N d-2500N 12 m 8. A block slides along a rough incline. Its total mechanical energy (E) and potential energy (U) respectively at point A are (70 J and 50 J) and at point B are (40 J and 40 J). The work done by the frictional force on the block between points A and B is: a) 10 J b) - 40 J c) - 20 J d) - 30 J B A
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter5: Energy
Section: Chapter Questions
Problem 65AP: A roller-coaster car of mass 1.50 103 kg is initially at the top of a rise at point . It then moves...
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