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Physics - Rotation Question with Solution | TestHub

PhysicsRotationMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

The instantaneous velocity of point $B$ of the given rod of length $0.5 m$ is $3 m s^{- 1}$ in the represented direction. The angular velocity of the rod for the minimum velocity of the end $A$ is

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Answer:

Solution:

If rod is rotated about end A, then vertical component of velocity, $v_{⊥}$ of end a will be zero.

$∴ ω = \frac{v \sin 60^{o}}{l} = \frac{\sqrt{3} v}{2 l}$

$= \frac{\sqrt{3} \times 3}{2 \times 0.5} = 5.2$ $rad s^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:RotationSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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