Question

For high speed engines, the cam follower should move with
1) Uniform velocity
2) Simple harmonic motion
3) Uniform acceleration and retardation
4) Cycloidal motion

Answer 1

1) Uniform Velocity

Answer 2

The correct answer is option (4) Cycloidal motion.

Cam is type of roller. Cycloidal motion is obtained by rolling a circle on the y-axis of the displacement diagram.

The concept involved here is maximum acceleration is required with high speed engines  and this maximum acceleration is obtained only through cycloidal motion.