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The total mass of an elevator with a 80 ...

The total mass of an elevator with a 80 kg man in it is 1000 kg. This elevator moving upward with a speed of 8 `m//sec,` is brought to rest over a distance of 16m. The tension T in the cables supporting the elevator and the force exerted on the man by the elevator floor will respectively be-

A

7800 N,624 N

B

624 N, 7800 N

C

78 N, 624 N

D

624 N, 78 N

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Knowledge Check

  • A 1500-kg elevator moves upward with constant speed through a vertical distance of 25 m. How much work was done by the tension in the elevator cable ?

    A
    990J
    B
    8100J
    C
    140,000J
    D
    370,000J

  • If the tension in the cable of 1000 kg elevator is 1000 kg weight, the elevator

    A
    Is accelerating upwards
    B
    Is accelerating downwards
    C
    May be at rest or accelerating
    D
    May be at rest or in uniform motion

  • An elevator and its load have a total mass of 800 kg. If the elevator, originally moving downwards at 10 ms^(-1) , is brought to rest with constant deceleration in a distance of 25 m, the tension in the supporting canble will be ( g=10 ms^(-2) )

    A
    8000 N
    B
    6400 N
    C
    11200 N
    D
    9600 N

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    An elecator in which a man is standing is moving upwards with a speed of 10ms^(-1) if the man drops a coin from a height of 2.45 m from the floor of elevator it reaches the floor of the elevator after time (g=9.8ms^(-2))

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