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NEST2020PhysicsLaws of Motion

The coefficient of static friction between a small block and the surface of a horizontal turntable is 0.09 . The block is placed at a distance of 0.1 m from the centre of the turntable. At time t=0 s the turntable starts rotating from rest with a constant angular acceleration of 0.5 rad s ⁻² . The time at which the block starts sliding is t_s . Select the correct statement(s).

Options

  1. AThe angle between the net linear acceleration and radial vector is / 4 radians.
  2. Bt_s is 6 s
  3. CAt t_s the angular speed of the turntable is 6 rad s ⁻¹ .
  4. DThe turntable has rotated through 9 radians.

Correct answer

D. The turntable has rotated through 9 radians.

Step-by-step solution

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