physics

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An object is hung from a spring balance attached to the ceiling of an elevator cab. The balance reads 60 N when the elevator is standing still.
(a) What is the reading when the elevator is moving upward with a constant speed of 9.6 m/s?
N

(b) What is the reading when the elevator is moving upward with a speed of 9.6 m/s while decelerating at a rate of 1.9 m/s2?
N

  • physics -

    a) F=ma+mg so if a is zero, ...
    b)same formula.

  • physics -

    3.4 N

  • physics -

    i am afraid

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