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The average power required to lift a 100...

The average power required to lift a 100 kg mass through a height of 50 metres in approximately 50 seconds would be

A

50 J/s

B

5000 J/s

C

100 J/s

D

980 J/s

Text Solution

Verified by Experts

The correct Answer is:
D
`P= (mgh)/(t)= (100 xx 9.8 xx 50)/(50)= 980J//s`
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Knowledge Check

  • 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

  • The work done in lifting a mass of 1 kg to a height of 9.8 m is

    A
    1 J
    B
    `(9.8)^(2)` J
    C
    9.8 J
    D
    none of these

  • Calculate the power of a crane in watts, which lifts a mass of 100 kg to a height of 10 m in 20 s .

    A
    590 w
    B
    480 w
    C
    490 w
    D
    600 w

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