Homework Help: Physics

Posted by Abdul Waheed on Wednesday, November 2, 2011 at 9:00am.

A worker pushes 25Kg crate a distance of 5m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic frication between the crate and the floor is 0.23.
(a) What magnitude of force must the worker apply?
(b) How much work is done on the crate by this force?
(c) How much work is done on the crate by frication?
(d) How much work is done on the crate by normal force?
(e) How much work is done on the crate by the gravity?
(f) What is the total work done on the crate?

Physics - drwls, Wednesday, November 2, 2011 at 9:11am
(a) The applied force must equal the friction force. You should know how to calculate that, using the friction coefficient.
(b) Force x (5 m)
(c) minus (b) answer
(d) zero
(e) zero
(f) zero
Physics - Eduardo, Wednesday, October 31, 2012 at 1:47pm
The answer above is very stupid

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