A) \[22.5kg\times {{m}^{2}}\]
B) \[11.25\times kg\times {{m}^{2}}\]
C) \[5.62\times kg\times {{m}^{2}}\]
D) \[7.16\times {{10}^{-7}}kg-{{m}^{2}}\]
Correct Answer: D
Solution :
Time period of a magnet \[T=2\pi \sqrt{\frac{I}{MB}}\] or \[I=\frac{{{T}^{2}}MB}{4{{\pi }^{2}}}=\frac{225\times 5\times {{10}^{-5}}\times 8\pi \times {{10}^{-4}}}{4{{\pi }^{2}}}\] \[\therefore \ I=7.16\times {{10}^{-7}}kg-{{m}^{2}}\]
You need to login to perform this action.
You will be redirected in
3 sec
