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 $\frac{I}{\omega }$ $I{\omega }^2$