Physics, 06.11.2020 14:40 nestergurl101

three boxes each weigh 100 N. A man lifts all the boxes together from the ground on to a shelf that is 1.5 m above the ground. The man takes 2.0s to do thid. How much useful power does the man produce to lift the boxes?

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three boxes each weigh 100 N. A man lifts all the boxes together from the ground on to a shelf that...