Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Rigid Body Dynamics/
Question 30315
JEE Physics · Medium

Rigid Body Dynamics: Rolling — Contact Point MCQ

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

Timer-based practiceDetailed answer reviewMobile-friendly flow
Rolling — Contact PointMediumQuestion 30315

Question

For a disc rolling without slipping, the velocity of the contact point with the ground is:
  1. A
    2v_cm
  2. B
    v_cm
  3. C
    Zero
    Correct
  4. D
    v_cm/2

Correct answer

Zero

Explanation

In pure rolling, the contact point is instantaneously at rest. Translational velocity (v_cm forward) exactly cancels rotational velocity (ωR = v_cm backward) at the contact point.

Review Rigid Body Dynamics notesStart timed chapter practice