First slide
Connected bodies
Question

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/s2. If g = 10 m/s2, the tension in the supporting cable is

Moderate
Solution

Total mass = Mass of lift + Mass of person
                   =940+ 60= 1000kg
                   T- mg= ma
Hence, Z- 1000 x l0 =1000 x I
T = 11000N

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