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MHT CET 2020 (16 Oct, Shift 1) · Rotational Kinematics & Dynamics

Rotational Kinematics & Dynamics question from MHT CET 2020 (16 Oct, Shift 1)

Q45MHT CET 2020 · 16 OCT · SHIFT 1Easy

Rotational Kinematics & Dynamics

If there is a change of angular momentum from $1\text{ J s}$ to $4\text{ J s}$ in $4\text{ s}$ , then the torque

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Answer: (b)

$\tau = \frac{\Delta L}{\Delta t} = \frac{4 - 1}{4}$
$\tau = \frac{3}{4}$ J (N m)
So the answer is (b) $\frac{3}{4}$ J.

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