A man of mass 70 kg stands on a weighing scale in a lift which is moving a) upwards with a uniform speed of 10 ms−1, b) downwards with a uniform acceleration of 5 ms−1, c) upwards with a uniform acceleration of 5 ms−1. What would be the readings on the scale in each case? d) What would be the reading if the lift mechanism failed and it hurtled down freely under gravity?

A man of mass 70 kg stands on a weighing scale in a lift which is movi

1.	A man of mass 70 kg stands on a weighing scale in a lift which is moving a) upwards with a uniform speed of 10 ms−1, b) downwards with a uniform acceleration of 5 ms−1, c) upwards with a uniform acceleration of 5 ms−1. What would be the readings on the scale in each case? d) What would be the reading if the lift mechanism failed and it hurtled down freely under gravity?
Answer» A man of mass 70 kg stands on a weighing scale in a lift which is moving a) upwards with a uniform speed of $10 m s^{- 1}$ , b) downwards with a uniform acceleration of $5 m s^{- 1}$ , c) upwards with a uniform acceleration of $5 m s^{- 1}$ . What would be the readings on the scale in each case? d) What would be the reading if the lift mechanism failed and it hurtled down freely under gravity?

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