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trikat
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Homework Statement
A 51-kg packing crate is pulled with a constant speed across a rough floor with a rope that is at an angle of 43.5 degrees above the horizontal. if the tension in the rope is 115 N, how much work is done on the crate to move it 8.0 m?
Homework Equations
Do we use frictional force when calculating work?
The Attempt at a Solution
W=Fd where F is the force only in the x direction. W=115cos(43.5)8.0[/B]