Mr. Mangan pushes a 90 kg box across a rough surface with a force of 300 N over a displacement of 5 m. The coefficient of kinetic friction between the box and the surface is 0.3. Find the work done by Mr. Mangan, by friction, and the net work.

Principles of Physics: A Calculus-Based Text
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Chapter6: Energy Of A System
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Problem 25P: A force F=(4xi+3yj), where F is in newtons and x and y are in meters, acts on an object as the...
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1. Mr. Mangan pushes a 90 kg box across a rough surface with a force of 300 N over a
displacement of 5 m. The coefficient of kinetic friction between the box and the surface
is 0.3. Find the work done by Mr. Mangan, by friction, and the net work.
Transcribed Image Text:1. Mr. Mangan pushes a 90 kg box across a rough surface with a force of 300 N over a displacement of 5 m. The coefficient of kinetic friction between the box and the surface is 0.3. Find the work done by Mr. Mangan, by friction, and the net work.
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