JEE Physics · Hard

Rigid Body Dynamics: Advanced — Instantaneous Axis MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Advanced — Instantaneous AxisHardQuestion 30382

Question

For a disc rolling without slipping, the instantaneous axis of rotation passes through:
  1. A
    The centre of the disc
  2. B
    The topmost point
  3. C
    The contact point
    Correct
  4. D
    The horizontal midpoint

Correct answer

The contact point

Explanation

In pure rolling, the contact point has zero velocity and acts as the instantaneous centre of rotation. The disc rotates about this instantaneous axis.