Question

An elevator of mass 250kg is carrying two persons whose masses are 50kg and 100kg. if the force exerted by the motor is 3000N. Calculate the total mass of the bodies in the elevator. ​

Answer 1

$m_{elevator}=250kg \\m_{people}=50kg+100kg=150kg \\m_{motor}\approx3000N\div10\frac{m}{s^2}\approx300kg \\m_{total}\approx250kg+150kg+300kg\approx\boxed{700kg}$

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