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The weight of a man in a lift moving upw...

The weight of a man in a lift moving upwards is 608 N while the weight of the same man in the lift moving downwards with the same acceleration is 368 N. His normal weight in newton is :

A

488

B

588

C

480

D

240

Text Solution

Verified by Experts

The correct Answer is:
A

Here `m(g+a)=608 and m(g-a)=368.`
Solving `a=2.4ms^(-2)`
and `m=49.8kg`.
The real weight `=49.8xx9.8=488N`
Thus correct choice is (a).
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