Moment of force — task. Science TNSB Mentoring, Class 10 Crash course.

Choose the best option:

Assertion (A): For a rigid body in equilibrium, sum of moments about any axis is zero.

Reason (R): Momentum of a system remains constant if no net external forces acts on it.

Both the assertion and the reason are true and the reason is the correct explanation of assertion.
Both the assertion and the reason are true and the reason is not the correct explanation of assertion.
Assertion is true but the reason is false
Assertion is false but the reason is true

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2. Moment of force

Question: