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March 24, 2017

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An elevator in a tall building is allowed to reach a maximum speed of 3.3 m/s going down. What must the tension be in the cable to stop this elevator over a distance of 3.4 m if the elevator has a mass of 1330 kg including occupants?

  • Physics - ,

    First calculate the acceleration "a" needed to decelerate in that distance Y.
    V = sqrt(2aX)
    a = V^2/(2X) = 1.6 m/s^2

    The tension T in the cable during deceleration is :
    T = M (g + a)

  • Physics - ,

    5.6
    n

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