A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 102 N parallel to the incline, which makes an angle of 20.3° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.96 m. (a) How much work is done by the gravitational force on the crate? 161.75 How is the work done by gravity related to the gravitational potential energy of an object? J (b) Determine the increase in internal energy of the crate-incline system owing to friction. 164.57 Friction will cause the internal energy of an object to increase. This causes a decrease in the mechanical energy. J (c) How much work is done by the 102-N force on the crate? 505.92
A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 102 N parallel to the incline, which makes an angle of 20.3° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.96 m. (a) How much work is done by the gravitational force on the crate? 161.75 How is the work done by gravity related to the gravitational potential energy of an object? J (b) Determine the increase in internal energy of the crate-incline system owing to friction. 164.57 Friction will cause the internal energy of an object to increase. This causes a decrease in the mechanical energy. J (c) How much work is done by the 102-N force on the crate? 505.92
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 7PE: A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N...
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