A man lifts a luggage of weight 100 N from the ground and puts it on his head 1.7 m above the ground. Calculate work done by him on the luggage.

180 J

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200 J

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150 J

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170 J

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Solution

The correct option is D
170 J

Work done by the man on the luggage = Force x displacement

Force = 100 N & Displacement = 1.7 m
Work done = 100 x 1.7 = 170 J
Hence the required work done is 170 J. It can be noted that the work is done by the man on the luggage because he lifts it against the gravitational force of the Earth.

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