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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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Assertion: When you lean behind over the hind legs of the chair, the chair falls back after a certain angle.

Reason: Centre of mass lying outside the system makes the system unstable.

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Correct option: C

If Assertion is correct but Reason is incorrect.

Option C is correct. The chair falls because the center of mass shifts outside the base of support, causing instability. The reason is incorrect because stability depends on the position of the center of mass relative to the support base, not whether it's inside the system.

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\omega = {t^4} + 2{t^3}

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t = 1\,sec

\left( {rad\,{s^{ - 2}}} \right)