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BITSAT2024PhysicsMotion in Two DimensionsActual

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

Options

  1. A^2 2
  2. B^2- ^2 2
  3. C^2- ^2 2
  4. D( - ) 2

Correct answer

A. ^2 2

Step-by-step solution

= - t . Comparing with = ₀- t Initial angular velocity = Angular'retardation = Angle rotated before it stops is ^2 2 . [using . ^2= ₀^2+2 ]

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