Question

Figure 7 shows a box placed on a weighing balance. The balance is placed on the floor of a lift.

State what would be observed on the reading of the balance when the:

1. lift is accelerating downwards
2. lift moves downwards with a uniform velocity 
3. lift is accelerating upwards

Answer 1

1. Reads a smaller value than the weight of the box( weightlessness)
   (reading reduces/ moves(deflects) to the left/ anticlockwise
2. Reads the actual weight of the box/ reading remains constant/ nothing happens/ pointer remains stationary
3. Reads a value bigger(greater/ higher) than the weight of the box./ Reading increases/ meter moves(deflects) to the right/ clockwise 
   (deny "mass of the box")