The weight of a person standing in a descending lift ......................... .
A.
IncreasesB.
remains unchangedC.
becomes zeroD.
decreasesAnswer & Solution
Answer:
Decreases
Solution:
The weight of a person standing in a descending lift decreases because the
lift is accelerating downward. When the lift moves down, the person experiences
a reduction in the normal force exerted by the floor of the lift, which is what
we feel as weight. This is due to the relative motion between the person and
the lift, leading to a feeling of lighter weight. If the lift were in free
fall, the weight would become zero.
When a lift descends the apparent weight of a standing
person inside it decreases as weight R=mg-ma=m(g-a).
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