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Q.

How much work does a pulling force of 40 N do on the 20 kg box in pulling it 8 m across the floor at a constant speed. The pulling force is directed at 60° above the horizontal

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An Intiative by Sri Chaitanya

a

160 J

b

277 J

c

784 J

d

None of the above

answer is A.

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Detailed Solution

W=F→.s→=40×8×cos60°=160 J

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