A) 2 kg
B) \[(2\times g)\,kg\]
C) \[(4\times g)\,kg\]
D) 4 kg
Correct Answer: D
Solution :
When lift moves upward then reading of the spring balance, \[R=m(g+a)=2(g+g)=4g\ N=4\ kg\] [As \[a=g\]]You need to login to perform this action.
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