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Find the power of an engine which lifts ...

Find the power of an engine which lifts 90 metric tonnes of coal per hour from a depth of 200m.

Text Solution

Verified by Experts

`P = (mgh)/(t) = ((90xx1000) (10) (200)J)/((60 xx 60)s) = 5xx10^4 W = 50 kW`
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Knowledge Check

  • What would be the power of an engine which supplies 18 kJ of energy per minute?

    A
    200 W
    B
    250 W
    C
    300 W
    D
    1080 W

  • The power (P) of an engine lifting a mass of 100 kg upto a height of 10 m in 1 min is

    A
    P=163.3 W
    B
    P=9800 W
    C
    P=10000 W
    D
    P=5000 W

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