Question

Angular Momentum of a Rigid Body Figure $11-46$ gives the torque $\tau$ that acts on an initially stationary disk that can rotate about its center like a merry-go-round. The scale on the $\tau$ axis is set by $\tau_{s}=4.0 \mathrm{N} \cdot \mathrm{m} .$ What is the angular momentum of the disk about the rotation axis at times (a) $t=7.0 \mathrm{s}$ and (b) $t=20 \mathrm{s?}$

          Angular Momentum of a Rigid Body
Figure $11-46$ gives the torque $\tau$ that acts on an initially stationary disk that can rotate about its center like a merry-go-round. The scale on the $\tau$ axis is set by $\tau_{s}=4.0 \mathrm{N} \cdot \mathrm{m} .$ What is the angular momentum of the disk about the rotation axis at times (a) $t=7.0 \mathrm{s}$ and (b) $t=20 \mathrm{s?}$

Added by Paul T.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sri K

07/02/2023

Step 1

We know that torque is related to angular acceleration by the equation $\tau = I \alpha$, where $\tau$ is the torque, $I$ is the moment of inertia, and $\alpha$ is the angular acceleration. Show more…

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Angular Momentum of a Rigid Body Figure $11-46$ gives the torque $\tau$ that acts on an initially stationary disk that can rotate about its center like a merry-go-round. The scale on the $\tau$ axis is set by $\tau_{s}=4.0 \mathrm{N} \cdot \mathrm{m} .$ What is the angular momentum of the disk about the rotation axis at times (a) $t=7.0 \mathrm{s}$ and (b) $t=20 \mathrm{s?}$