Advanced — Instantaneous AxisHardQuestion 30382
Question
For a disc rolling without slipping, the instantaneous axis of rotation passes through:
- AThe centre of the disc
- BThe topmost point
- CThe contact pointCorrect
- DThe 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.