Question

Angular momentum $ 4\hat{i}-13\hat{j}+6\hat{k} $ of body with mass moment of inertia I and angular velocity ad/sec is equal to :

• A. $ 6\hat{i}-2\hat{j}+8\hat{k} $
• B. $ 4\times {{10}^{-4}} $
• C. $ 1.07\times {{10}^{7}}m/s $
• D. none of these

Answer 1

Answer: (C)

Here: mass moment of inertia of body = I Angular velocity of the body $ {{10}^{-2}} $ The angular momentum is $ {{10}^{-3}} $ ??(i) The velocity of the body $ {{10}^{-4}} $ ?....(ii) So, the angular momentum is obtained after putting the value of v from equation (ii) in equation (i), we get $ J $ or $ \frac{I}{\omega } $ $ I{{\omega }^{2}} $