2. A 9 kg box is raised by a crane to a height of 5 m from the ground. From rest it slides down a frictionless incline, 30° from the horizontal. Then it slides on a horizontal floor where a constant frictional force is introduced. The block is brought to rest at point B, which is 20 m to the right of point A. a) What is the work done on the 9 kg block by the crane and by gravity? b) What is the speed of the 9 kg block by the time it reaches point A? c) What is the work done by the frictional force on the two blocks as they come to a stop? 5 т 30° A B 20 m box

2. A 9 kg box is raised by a crane to a height of 5 m from the ground. From rest it slides down a frictionless incline, 30° from the horizontal. Then it slides on a horizontal floor where a constant frictional force is introduced. The block is brought to rest at point B, which is 20 m to the right of point A. a) What is the work done on the 9 kg block by the crane and by gravity? b) What is the speed of the 9 kg block by the time it reaches point A? c) What is the work done by the frictional force on the two blocks as they come to a stop? 5 т 30° A B 20 m box

Name: 2. A 9 kg box is raised by a crane to a height of 5 m from the ground
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Description: 2. A 9 kg box is raised by a crane to a height of 5 m from the ground. From rest it slides down a frictionlessincline, 30° from the horizontal. Then it slides on a horizontal floor where a constant frictional force isintroduced. The block is brought

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 8PE: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.0°...

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