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# Problem: How much work does an elevator motor do to lift a 1000 kg elevator a height of 100m? answer in J.How much power must the motor supply to do this in 50 s at constant speed? answer in W.

###### FREE Expert Solution

Potential energy,

$\overline{){\mathbf{U}}{\mathbf{=}}{\mathbf{m}}{\mathbf{g}}{\mathbf{h}}}$

Power,

$\overline{){\mathbf{P}}{\mathbf{=}}\frac{\mathbf{W}}{\mathbf{∆}\mathbf{t}}}$

(a)

m = 1000 kg

g = 9.8

Δh = 100 m

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###### Problem Details

How much work does an elevator motor do to lift a 1000 kg elevator a height of 100m? answer in J.

How much power must the motor supply to do this in 50 s at constant speed? answer in W.