A) \[\mu \operatorname{A}\]
B) \[\frac{\mu \operatorname{A}}{2}\]
C) \[\frac{\operatorname{A}}{\mu }\]
D) \[\frac{\operatorname{A}}{2\mu }\]
Correct Answer: A
Solution :
\[\operatorname{Kinetic} energy of rotation = \frac{1}{2} I{{\omega }^{2}}\] \[1500=\frac{1}{2}\times 1.2{{\omega }^{2}}\] \[\omega = 50 rad/sec\] \[\omega -{{\omega }_{\operatorname{o}}} =\propto \operatorname{t}\] \[50-0=25t=2sec.\]
You need to login to perform this action.
You will be redirected in
3 sec
