A) \[\frac{mgl}{2}\]
B) \[\frac{mgl}{\sqrt{2}}\]
C) \[\frac{\sqrt{3}}{2}mgl\]
D) \[\frac{2}{\sqrt{3}}mgl\]
E) \[mgl\]
Correct Answer: C
Solution :
Loss of potential energy in coming from A to \[B=mgh\] \[=mgl\,cos30{}^\circ \] \[=\frac{\sqrt{3}}{2}mgl\] Kinetic energy gained = loss of potential energy \[=\frac{\sqrt{3}}{2}mgl\]You need to login to perform this action.
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