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A man weighing 50 kg f supports a body of 25 kg fon his head. What is the work done when he movesa distance of 20 m up an incline of 1 in 10 ? TakeFig. |
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Answer» Incline of one in 10 means that in moving 20 m he reached a height of H= 2 m. Total weight of man and block = 75kg Thus work done is: mgH 75*9.8*2 = 1470J |
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