A) \[\frac{1}{8}m{{u}^{2}}\]
B) \[\frac{1}{4}m{{u}^{2}}\]
C) \[\frac{1}{4}m{{u}^{2}}\]
D) \[m{{u}^{2}}\]
Correct Answer: B
Solution :
K.E. of rotation \[=\frac{1}{2}I{{\omega }^{2}}=\frac{1}{2}\frac{m{{r}^{2}}}{2}\times {{\omega }^{2}}\] \[=\frac{1}{4}m{{r}^{2}}\times \frac{{{\upsilon }^{2}}}{{{r}^{2}}}=\frac{1}{4}m{{\upsilon }^{2}}\]
You need to login to perform this action.
You will be redirected in
3 sec
