Question

If a crane lifts a load of 75N to a height of 20m in 100s, what is the power of the crane?

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Answer 1

P = 15 [W]

Step-by-step explanation:

Power is defined as the relationship between work over a certain time.

In this way we must calculate the work which is defined as the product of force by distance.

`W=F*d\\W=75*20\\W=1500[J]`

And the power.

`P=W/t\\P=1500/100\\P=15[W]`

Power given in units of watts.