A girl with a mass of 45 kg is standing on a scale in a lift. What is the weight of the
girl when (i) the lift is accelerating upwards at 2.0 ms s
−2
and (ii) the lift is moving
down with a constant velocity. Calculate the inertial force in each case. (5)
b) An object is being rotated in a centrifuge which has a radius of 6.0 m. If the
acceleration of the centrifuge is 3 g, calculate the velocity of object and the time
period of its motion.
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the answer it the lift is moving down with constant volicity .calculate the inertial force in eaxh case
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