1.

In the above problem if the lift moves up with an acceleration equal to the acceleration due to gravity, the reading on the spring balance will be    [NCERT 1977]

A.                         2 kg               
B.                         \[(2\times g)\,kg\]            
C.                         \[(4\times g)\,kg\]            
D.                           4 kg            
Answer» E.


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