A man of mass 70kg stands on a weighing scale in a lift which is moving
1. upwards with a uniform speed of 10ms-1
2. downwards with a uniform acceleration of 5ms-2
3. upwards with a uniform acceleration of 5ms-2 What would be the readings on the scale in each case?
4. What would be the reading if the lift mechanism failed and it hurtled down freely under gravity?