A 70 kg man standing on a weighing scale in a lift which is moving a) upward with a uniform speed of 10m/s, b) downward with a uniform acceleration of 5m/s2, c) upward with a uniform acceleration of 5m/s2. The reading of the scale in each case?
An elevator, in which a man is standing, is moving upward with a constant acceleration of 1 m/ s2. At some instant when speed of elevator is 10 m/s, the man drops a coin from a height of 2 m. Find the time taken by the coin the reach the floor. (g=9.8 m/s2).