A) \[\text{v}\]
B) \[\frac{\text{v}}{\sin \theta }\]
C) \[\text{v}\,\sin \theta \]
D) \[\frac{\text{v}}{\sin \theta }\]
Correct Answer: B
Solution :
\[{{x}^{2}}+{{y}^{2}}={{l}^{2}}\] \[2x\frac{dx}{dt}=2l\frac{dl}{dt}\] \[\Rightarrow \,\,\frac{dx}{dt}=\frac{l}{x}\frac{dl}{dt}=\frac{V}{x/l}\Rightarrow V=\frac{V}{\sin \theta }\]You need to login to perform this action.
You will be redirected in
3 sec