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Mechanical Engineering QUESTION #2527
Question 1
The principle of angular impulse and momentum about a fixed point O states:
  • Angular momentum equals linear momentum times radius
  • \(\mathbf{H}_{O2} - \mathbf{H}_{O1} = \int_{t_1}^{t_2}\sum\mathbf{M}_O\,dt\)✔️
  • Torque equals moment of inertia
  • Angular momentum is always conserved
Correct Answer Explanation
The angular impulse-momentum principle: \(\mathbf{H}_{O2}=\mathbf{H}_{O1}+\int_{t_1}^{t_2}\sum\mathbf{M}_O\,dt\), where \(\mathbf{H}_O=\mathbf{r}\times m\mathbf{v}\) is angular momentum.