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The apparent weight of man in a lift is ...

The apparent weight of man in a lift is less the real weight when :

A

the lift is going up with an acceleration

B

the lift is going down with uniform speed

C

the lift is going up with uniform speed

D

the lift is going down with an acceleration

Text Solution

Verified by Experts

The correct Answer is:
D
If the left accelerates downwards with acceleration a, then the apparent weight of the man standing on the lift will be less then tru weight of the man by an amount ma. On the countrary, If the lift accelerates upward with acceleration, then apperent weight of the man will be greater than his tru weight.
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Knowledge Check

  • The apparent weight of a body

    A
    may be positive
    B
    may be negative
    C
    may be zero
    D
    is always positive

  • Which of the following is/are correct statement? I. The apparent weight of a man in a lift going upward with some acceleration becomes more. II. The apparent weight of a man in a lift going upward with some velocity become less. III. The apparent weight of a man in a lift going upward with some acceleration become less.

    A
    I is correct
    B
    Il is correct
    C
    III Is correct
    D
    All are correct

  • A body is kept in a lift may be moving upwards or dowwards. It is found that durig the motion of the lift, the apparent weight of the body becomes twice its real weight. Then the lift is

    A
    moving up with a unifoirm velocity of 9.8 m/s
    B
    moving down with a uniform velocity of 9.8 m/s
    C
    moving up with acceleration g
    D
    moving down with an acceleration g

    • Similar Questions

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    Assertion : The apparent weight of a body in a liquid is equal to the difference of true weight of the body and weight of the liquid displaced by the body . Reason : Weight of liquid displaced in this case is equal to the loss of weight .

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