a rock with mass of 5kg is carried up a small hill 10 meters high. how much work had to be done in carrying the rock up hill

Question

a rock with mass of 5kg is carried up a small hill 10 meters high. how much work had to be done in carrying the rock up hill

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Dulcie 5 years 2021-08-10T00:37:47+00:00 1 Answers 28 views 0

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  1. thucuc
    0
    2021-08-10T00:39:34+00:00
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    Answer:

    490Nm

    Explanation:

    Given the following :

    Mass of rock = 5kg

    Height or distance = 10 meters

    A rock with mass of 5kg is carried up a small hill 10 meters high. how much work had to be done in carrying the rock up hill?

    Workdone is product of force and distance.

    Workdone = force * distance

    Recall :

    Force = mass * acceleration due to gravity (g)

    g = 9.8m/s^2

    Force = 5 * 9.8 = 49 N

    Therefore,

    Workdone = 49 × 10 = 490Nm

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