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7 July, 03:17

A weightlifter lifted 800 Newtons to a height of 2.5 meters. What is the power output if this was

done in 1.22 seconds?

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Answers (1)
  1. 7 July, 04:18
    0
    The power required is 1.6 kW.

    Answer:

    Explanation:

    Power is defined as the amount of work done on any object for a given time interval. In other words, power is the amount of force required to move an object in a given period of time.

    Power = Work done / time taken for that work done.

    Here the force is given as 800 N and the displacement is given as 2.5 m, while the time required for the displacement is given as 1.22 seconds.

    So the power will be ratio of the product of force acting on the weightlifter, displacement of the weight to the time taken for that displacement.

    Power = (800*2.5) / 1.22 = 1639 W

    So the power required is 1.6 kW.
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