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PHYS 211….Homework Assignment

A person is pulling a box across a horizontal floor at a constant speed of 1.8 m/s.The string the person is using to pull the box makes an angle of 28.0° relative to horizontal. The box has a mass of 4.60 kg and the tension in the string is 13.6N.The box moves 4.30m to the right.

1. How much work is done on the box by gravity?

1. b) How much work is done on the box by the normal force?

1. c) How much work is done on the box by tension

1. d) How much total work is done on the box?

1. e) How much work is done on the box by the kinetic frictional force?