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प्रश्न
Calculate the work done when:
A 5 kg weight is lifted 10 m vertically. (g = 9.8 m/s2)
उत्तर
Force = m × g = 5 × 9.8 = 49 N; Distance = 10 m
∴ Work done = F × d = 49 × 10 = 490 J.
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