A factory worker pushes a 28.7kg crate a distance of 4.1 m along a level floor a

Question

A factory worker pushes a 28.7kg crate a distance of 4.1 m along a level floor at constant velocity by pushing downward at an angle of 29 degree below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.24. How much work is done on the crate by this force when the crate is pushed a distance of 4.1 m? Express your answer using two significant figures. Submit My Answers Give Up Try Again; 4 attempts remaining How much work is done on the crate by friction during this displacement? Express

Explanation / Answer

b)W=u*(mg+F sin 29) * s=F cos 29 * s=370 because the block moves in constant speed, the frictional force=horizontal component of F so work by friction=work by Horizontal component of the force=370

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