A) 488
B) 588
C) 480
D) 240
Correct Answer: A
Solution :
If the lift is moving upwards with acceleration a, then \[m(g+a)=608\,\text{N}\] ?(i) If the lift is moving downwards with an acceleration a, then \[m(g-a)=368N\] ?(ii) Now, adding Eqs. (i) and (ii), we get \[2mg=608+368=976\] \[mg=488\,kg\]You need to login to perform this action.
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