A) \[\frac{BF\ell t}{2m}\]
B) \[\frac{BF\ell t}{4m}\]
C) \[\frac{5BF\ell t}{8m}\]
D) \[\frac{7BF\ell t}{8m}\]
Correct Answer: A
Solution :
[a] Velocity at any time t, \[v=a\] \[t=\frac{F}{m}t\] Now, \[e={{V}_{P}}-{{V}_{Q}}=Bv\ell \,\sin \,{{30}^{o}}=B\left( \frac{Ft}{m} \right)\ell \times \frac{1}{2}\] \[=\frac{BF\ell t}{2m}\]You need to login to perform this action.
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