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Physics - Rotation Question with Solution | TestHub

PhysicsRotationAngular momentumMedium2 minQB

PhysicsMediumstatement

A projectile of mass m is thrown from the origin O with a velocity $v_{0}$ at an angle $θ$ . Identify the correct statement :-

Options:

Answer:

Solution:

$L = r \times m v$ Taking components $L = m (x v_{y} - y v_{x})$ $x = v_{0} cos θ t, y = v_{0} sin θ t - \frac{1}{2} g t^{2}$ $v_{x} = v_{0} cos θ, v_{y} = v_{0} sin θ - g t$ $L = - \frac{1}{2} m g v_{0} cos θ t^{2} \hat{k}$ Magnitude grows with t, torque mgx also grows Answer: B

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Angular momentum

⏱ 2mℹ️ Source: QB

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