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20 September, 21:12

A weightlifter Lifes a 100 kg barbell from the floor to a height of 2.00 m in 1.50 seconds. find the power he generates (use G=10 N/KG)

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  1. 20 September, 21:13
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    Power = 1333.33[watts]

    Explanation:

    First we must find the weight of the mass that is lifting.

    m = 100 [kg]

    W = m * g

    where:

    g = gravity = 10 [m/s^2]

    W = 100*10 = 1000 [N]

    We know that work is defined as the product of force by distance.

    work = W * d

    work = 1000 * 2

    work = 2000 [J]

    And power is defined as work done at a given time.

    Power = work / time

    Power = 2000/1.5

    Power = 1333.33[Watt]
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