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Rotational Mechanics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsRotational Mechanics1 Mark
Question
A body is rotating nonuniformity about a vertical axis fixed in an inertial frame. The resultant force on a particle of the body not on the axis is:
  1. Vertical.
  2. Horizontal and skew with the axis.
  3. Horizontal and intersecting the axis.
  4. None of these.
✓

Answer

  1. Horizontal and skew with the axis.
Explanation:
The resultant force on a particle of the body rotating non-uniformly is always horizontal and skew with the rotation axis because net torque on the body is non-zero.

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