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Q: If a person stands on the weight scale inside the lift and the lift starts moving upwards then -
  • A. The scale will show more weight
  • B. The scale will show weight loss
  • C. The scale will show zero weight
  • D. The scale will not show any deflection but it will show the actual weight.
Correct Answer: Option A - With reference to the weight of the body inside the lift (i) When the lift moves up, the weight of the person in the lift appears to be increased. (ii) When the lift goes down, the weight of the person in the lift appears to be reduced. (iii) When the lift moves up or down at a uniform speed, there is no change in the weight of the person in the lift. (iv) If the lanyard of the lift breaks while descending, then it falls down like a free body, in such a situation, the weight of the person in the lift is zero. This is the state of weightlessness.
A. With reference to the weight of the body inside the lift (i) When the lift moves up, the weight of the person in the lift appears to be increased. (ii) When the lift goes down, the weight of the person in the lift appears to be reduced. (iii) When the lift moves up or down at a uniform speed, there is no change in the weight of the person in the lift. (iv) If the lanyard of the lift breaks while descending, then it falls down like a free body, in such a situation, the weight of the person in the lift is zero. This is the state of weightlessness.

Explanations:

With reference to the weight of the body inside the lift (i) When the lift moves up, the weight of the person in the lift appears to be increased. (ii) When the lift goes down, the weight of the person in the lift appears to be reduced. (iii) When the lift moves up or down at a uniform speed, there is no change in the weight of the person in the lift. (iv) If the lanyard of the lift breaks while descending, then it falls down like a free body, in such a situation, the weight of the person in the lift is zero. This is the state of weightlessness.