A) \[\frac{{{w}_{1}}+{{w}_{2}}}{2}\]
B) \[\frac{{{w}_{1}}-{{w}_{2}}}{2}\]
C) \[2{{w}_{1}}\]
D) \[2{{w}_{2}}\]
Correct Answer: A
Solution :
When lift moves up with constant acceleration \[a\], then \[{{w}_{1}}-mg=ma\] ... (i)You need to login to perform this action.
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