A man carries a load of 45kg up to 25 stairs, each measure 90cm. Calculate the work done by him ?
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Army I will not come online for 1 month or I will leave brainly
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please don't delete
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hi
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Total displacement of the man = 90 cm × 25 = 2250 cm = 22.5 m
Gravitational force exerted on the load = 45 kg × 9.8 ms⁻² = 441 N
Work done = FS = 441 N × 22.5 m = 9922.5 J
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