A) \[2 kg-{{m}^{2}}\]
B) \[1 kg-{{m}^{2}}\]
C) \[4 kg-{{m}^{2}}\]
D) \[8 kg-{{m}^{2}}\]
Correct Answer: A
Solution :
Given, \[\operatorname{r}=\,\,0.4\,m,\,\,\alpha =8\,\,rad\,s{{\,}^{-}}^{2}\] \[\operatorname{m}=4kg,\,\,I=\,\,?\] Torque, \[\tau =\,\,I\alpha =\,\,mgr\,\,\Rightarrow \,\,4 \times 10\times 0.4=I\times 8\] \[\Rightarrow \,\,\,I=\frac{16}{8}\,y=2kg\,-{{m}^{2}}\]You need to login to perform this action.
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