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A porter lifts a luggage of 15 kg from the ground and puts it on his head 1.5m above the ground. Calculate the work done by him on the luggage. |
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Answer» Answer: 225J Explanation: M = 15kg g = 10m/s^2 h = 1.5m As work done by an object is equal to the POTENTIAL ENERGY STORED in an object. Therefore, W = MGH = 15×10×1.5 = 225J. |
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