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An elevator with floor to roof height 24...

An elevator with floor to roof height 24m starts moving upwards with a constant acceleration of 2(m)/(s^(2)). At t=2s ,a bolt on the roof loosens and falls. Time the bolt takes to travel from the roof to the floor of the elevator is g=10ms^(-2)]

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An elevator car whose floor to ceiling distance is equal to 2.7m starts ascending with constant acceleration 1.2 m//s^2. 2 s after the start, a bolt begins falling from the ceiling of the car. Find (a)the time after which bolt hits the floor of the elevator. (b)the net displacement and distance travelled by the bolt, with respect to earth. (Take g=9.8 m//s^2)

An elevator whose floor-to-ceiling destance is 2.50 m starts ascending with a constant acceleration of 1.25 ms^(-2) On second after the start, a bolt begins falling from the elevator. Calculate: a. The free fall time of the bolt b. The displacement and reference frame of ground.

Knowledge Check

  • . An elevator, whose floor to the ceiling dis tance is 2.50m, starts ascending with a con stant acceleration of 1.25 ms - 2. One second after the start, a bolt begins falling from the ceiling of elevator. The free fall time of the bolt is [g g=10ms^(-2) ]

    A
    `(3)/(2)s`
    B
    1s
    C
    `(2)/(3)s`
    D
    `(3)/(4)s`

  • An elevator car whose floor to ceiling distance is equal to 2.7 m starts ascendiung with constant acceleration 1.2(m)/(s^(2)) , 2 sec after the start a bolt begins falling from the ceiling of the car. Answer the following question g = 9.8 m//s^(2) Distance moved by elevator car w.r.t. ground frame during the free fall time of the bolt.

    A
    1.44 m
    B
    1.63m
    C
    1.68m
    D
    1.97m

  • An elevator car whose floor to ceiling distance is equal to 2.7 m starts ascendiung with constant acceleration 1.2(m)/(s^(2)) , 2 sec after the start a bolt begins falling from the ceiling of the car. Answer the following question g=9.8 m//s^(2) Distance covered by the bolt during the free fall time w.r.t. ground frame.

    A
    0.7 m
    B
    0.9 m
    C
    1.1 m
    D
    1.3 m

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    Starting from rest, A lift moves up with an acceleration of 2 ms^(-2) . In this lift , a ball is dropped from a height of 1.5m (with respect to floor of lift). The time taken by the ball to reach the floor of the lift is ( g=10 ms^(-2) )

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