A crane operator on a building site slowly raises a loaded a crate mass 750kg at a steady speed.(F=mg).Where g=acceleration due to gravity(Approximately=10m/s20).
a. What is the weight of the crate
b. How much is work is done by the force in raising the crate to a height of 5m
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Explanation:
W = mg = 750 × 10 = 7500N = F
Work = F × S
7500 × 5 = 37500 J
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