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    So, I came up to a question involving Newton's second law, and I have no idea what it means:

    5. An object of mass 20kg hangs from a spring balance in a lift. Its apparent mass is 24kg. What is the acceleration of the lift?

    What the hell is "apparent mass"? How can the object have two different masses? :lolwut:
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    Consider the lift accelerating upwards
    The object will press down on the balance with an increased force compared to when the lift is stationary (ie. This increased force is apparent weight)
    This force/gravity = apparent mass presumably
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Updated: February 6, 2010
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