Tamil Nadu Board of Secondary EducationHSC Science Class 11th

What is the relation between torque and angular momentum? - Physics

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Short Note

What is the relation between torque and angular momentum?

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Solution

We have the expression for the magnitude of angular momentum of a rigid body as, L = I ω.

The expression for the magnitude of the torque on a rigid body is, τ = I α.

We can further write the expression for torque as,

`tau = "l"(domega)/(dt) (∴ α = (dω)/dt)`

Where ω is angular velocity and α is angular acceleration.

We can also write the equation,

`tau = (d(Iomega))/(dt)`

`tau = (dL)/(dt)`

Concept: Rotational Dynamics
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Chapter 5: Motion of System of Particles and Rigid Bodies - Evaluation [Page 262]

APPEARS IN

Tamil Nadu Board Samacheer Kalvi Class 11th Physics Volume 1 and 2 Answers Guide
Chapter 5 Motion of System of Particles and Rigid Bodies
Evaluation | Q II. 6. | Page 262
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