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NEET2011PhysicsLaws of MotionActual

A person of mass 60 ~kg is inside a lift of mass 940 ~kg and presses the button on control panel. The lift starts moving upwards with an acceleration 1.0 ~m / s ^2 . If g=10 ~m / s ^2 , the tension in the supporting cable is

Options

  1. A9680 ~N
  2. B11000 ~N
  3. C1200 ~N
  4. D8600 ~N

Correct answer

B. 11000 ~N

Step-by-step solution

aligned & Total mass = Mass of lift + Mass of person & =940+60=1000 ~kg & T-m g=m a & Hence, T-1000 10=1000 1 & T=11000 ~N & aligned

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