Question

If θ is the angle turned by the cam from the beginning of the roller displacement, how the velocity changes with the change in theta?

(a) Increases with increase in theta

(b) Decreases with increase in theta

(c) Increases with negative change in theta

(d) Independent of theta

This question was posed to me by my college director while I was bunking the class.

The origin of the question is Tangent Cam with Reciprocating Roller Follower topic in portion Cams of Machine Dynamics

Answer 1

Right option is (a) Increases with increase in theta

Easiest explanation: The velocity of the follower is given by the equation

V = ω(r1+r2)(sinθ/cos^2θ)

Hence with increasing theta the velocity increases.