Q26Long answer
How is the power related to the speed at which a body can be lifted? How many kilograms will a man working at the power of 100 W, be able to lift at constant speed of 1 m s–1 vertically? (g = 10 m s–2)
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Power = = = m. g. ( ) time t t Here = speed power 100 Therefore, m = = =10 kg g × speed 10 ×1