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20 March, 03:24

On planet Zorg, a 30 kg barbell can be lifted by only exerting a force of 180N. What is the acceleration of gravity on Planet Zorg? Predict how the motion of this object would change if on Earth.

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  1. 20 March, 04:55
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    To calculate g, we use the formula F = mg. F is given as 180N, and m is given as 30 kg, therefore:

    180N = (30kg) (g)

    g = 6 m. s-1.

    The motion of this object would be decreased on Earth as more force would be required to lift it. If we assume g is 9.8 m. s-1 on Earth, we can calculate the force required.

    F = mg

    = (30kg) (9.8 m. s-1)

    = 294 N
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