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Rotational Mechanics — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsRotational Mechanics1 Mark
MCQ
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:
  • A
    Vertical.
  • ✓
    Horizontal and skew with the axis.
  • C
    Horizontal and intersecting the axis.
  • D
    None of these.
✓

Answer

Correct option: B.
Horizontal and skew with the axis.
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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