A) \[\sqrt{0.54}\,s\]
B) \[\sqrt{6}\,s\]
C) 0.7 s
D) 1 s
Correct Answer: C
Solution :
\[t=\sqrt{\frac{2h}{(g+a)}}\]\[=\sqrt{\frac{2\times 2.7}{(9.8+1.2)}}=\sqrt{\frac{5.4}{11}}=\sqrt{0.49}=0.7\sec \] As \[u=0\]and lift is moving upward with acceleration
You need to login to perform this action.
You will be redirected in
3 sec
