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12 November, 17:57

A 5-kg object slides down a frictionless surface inclined at an angle of 30º from the horizontal. The total distance moved by the object along the plane is 10 meters. The work done on the object by the normal force of the surface is?

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  1. 12 November, 18:21
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    Workdone = 0

    Explanation:

    The body is inclined at θ=30°, s=10m, m=5kg

    Workdone by the object = FsCosθ

    but the surface is a friction-less surface, this means coefficient of friction = 0

    F=μR

    F=0*R

    F=0

    W=FScosθ

    W=0*SCosθ

    W=0
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