Question

The maximum acceleration of the follower occurs when the angle of action of cam on the circular flank is 90 degrees

(a) True

(b) False

This question was posed to me during an interview for a job.

The origin of the question is Circular Arc Cam with Flatfaced Follower topic in division Cams of Machine Dynamics

Answer 1

The correct choice is (b) False

To elaborate: The acceleration of the follower is dependent of the following factors:

base circle radius, rotation speed of the cam, cosine of angle of action of cam on the circular flank and radius of circular flank. Since at φ = 90 degrees the cosine will become 0 and hence it will not be maximum.