A) \[1500.5\text{ }J\]
B) \[1687.5\text{ }J\]
C) \[2000.7\text{ }J~\]
D) \[1350.0\text{ }J\]
Correct Answer: B
Solution :
KE of rotating cylinder \[=\frac{1}{2}I{{\omega }^{2}}\] \[I=\frac{M{{R}^{2}}}{2}\][for solid cylinder] \[=\frac{30\times {{(0.30)}^{2}}}{2}\] \[=15\times 0.09\] \[=1.35kg/{{s}^{2}}\] \[\Rightarrow \] So \[KE=\frac{1}{2}\times 1.35\times {{(50)}^{2}}\] \[=1687.53\]
You need to login to perform this action.
You will be redirected in
3 sec
