A 45000 watt crane operating at full power lifts a 2100 kg object vertically for 17.4 seconds. How high has the crane lifted the object?

Question

A 45000 watt crane operating at full power lifts a 2100 kg object vertically for 17.4 seconds. How high has the crane lifted the object?

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Thiên Di 6 months 2021-07-26T12:46:41+00:00 1 Answers 5 views 0

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    2021-07-26T12:48:21+00:00

    Answer:

    Explanation:

    We need the power equation here, which is:

    Power = (F * Δx)/time

    where F * Δx is the amount of work done.

    F is a force which is measured in Newtons. We are given the mass of the object, but since we need a Force measure, we need the weight of the object:

    F = 2100(9.0)

    F = 21000 to the correct number of sig dig.

    Now we can plug in the values we have and solve for the displacement, Δx:

    45000=\frac{21000x}{17.4} and isolating x:

    \frac{17.4(45000)}{21000}=x so

    x = 37 m

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