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18 May, 08:22

Two objects were lifted by a machine. One object had a mass of 2 kilograms and was lifted at a speed of 2 m/sec. The other had a mass of 4 kilograms and was lifted at a rate of 3 m/sec

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  1. 18 May, 09:39
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    While lifting two object the machine needs the different momentum for different mass object.

    Explanation:

    Momentum is the quantity of motion contained in an object. Usually it is measured by the product of mass and velocity. Momentum of first mass = 2 kg * 2 m/sec = 4 kg m/sec Momentum of second mass = 4 kg * 3 m/sec = 12 kg m/sec So the machine requires higher mass in motion for second object (i. e. momentum) than the first one while lifting.
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