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July 4, 2015

Homework Help: physics

Posted by nancy on Monday, March 21, 2011 at 2:10pm.

A constant horizontal pull of 8.25 N drags a box along a horizontal floor through a distance of 19.1 m.
Q How much work does the pull do on the box?
Ans: i got the answer as W = 158 J
But i have problem with the second question?
Question: Suppose that the same pull is exerted at an angle above the horizontal. If this pull now does 60.0 of work on the box while pulling it through the same distance, what angle does the force make with the horizontal?
Ans. theta = _____ degree.

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