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kristine.vista Group Title

A concrete block is pulled 7.0m across a frictionless surface by means of a rope. The tension in the rope is 40. N, and the network done on the block is 247 J. What angle does the rope make with the horizontal?

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    |dw:1317471732810:dw|

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    work= dot product of force and displacement W=F*S*cos(x) cos x=W/(F*S) from this x can be obtained

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