Question

Find the work done in pulling a roller through 100 m horizontally when force of 150 kg wt is acting aling a chain making angle 60 degree with the ground

Answer 1

$w = fs \: cos60 = (150 \times 100 ) \div 2 = 7500$
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Answer 2

Answer:

73500

Explanation:

F= 150 kg wt = 150×g= 150×9.8= 1470

D=100m

w = FDCos60°= 1470×100×Cos60°=147000×(1/2)=73500

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