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A massive box is dragged along a horizon...

A massive box is dragged along a horizontal floor by a rope. The rope makes an angle of `60^(@)` with the horizontal. Find the work done if the tension in the rope is 200 N and the box is moved through a distance of 20 m.

Text Solution

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Tension T = 200N, distance S = 20 m, `theta = 60^(@)`
Work done `W=(vec(F)vec(S))=FScostheta=(Fcostheta)s`
`= 200 xx cos 60^(@) xx 20 = 2000 j`
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