A gardener pushes a lawn roller through a distance 20 ~m . If he applies a force of 30 ~kg - wt in a direction inclined at 60^ to the ground, the work done by the gardener in pushing the roller is [ g =9.8 ~m / s ^2, 30^ = 60^ = 1 2 , 30^ =

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A gardener pushes a lawn roller through a distance 20 ~m . If he applies a force of 30 ~kg - wt in a direction inclined at 60^ to the ground, the work done by the gardener in pushing the roller is [ g =9.8 ~m / s ^2, 30^ = 60^ = 1 2 , 30^ = 60^ = 3 2 ]

Quantrex Academy · Accepted Answer

Correct answer: D. 2940 ~J

Consider the diagram below: aligned & W = F S ( ) & W = F S = F S 60^ =30 (9.8) 20 1 2 =2940 ~J aligned

A gardener pushes a lawn roller through a distance 20 ~m . If he applies a force of 30 ~kg - wt in a direction inclined at 60^ to the ground, the work done by the gardener in pushing the roller is [ g =9.8 ~m / s ^2, 30^ = 60^ = 1 2 , 30^ = 60^ = 3 2 ]

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