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What happens to the apparent weight of the person inside the lift moving with net upward acceleration?

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1. The lift is said to be moving with net upward acceleration in two possible conditions:

  • when the lift just starts moving upwards or
  • is about to stop at a lower floor during its downward motion.

2. As the net acceleration is upwards, the upward force must be greater.

∴ F = ma = N – mg

∴ N = mg + ma

∴ N > mg

3. Thus, for a passenger inside this lift, his apparent weight is more than his actual weight when the lift was not accelerated.

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