Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionMiscellaneousEasy2 minPYQ_2024

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A rigid body rotates about a fixed axis with variable angular velocity equal to $α - βt$ , at the time $t$ , where $α, β$ are constants. The angle through which it rotates before it stops is

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Solution:

$ω = α - βt$ . Comparing with $ω = ω_{0} - α t$ Initial angular velocity $= α$ Angular'retardation $= β$ $∴$ Angle rotated before it stops is $\frac{α ^{2}}{2 β}$ . [using $ω^{2} = ω_{0}^{2} + 2 βθ]$

Stream:BITSATSubject:PhysicsTopic:Circular MotionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2024

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