The contact between cam and follower
is to form a :
Lower pair
Higher pair
Sliding pair
Rolling pair
Higher pair
The contact between cam and follower forms a higher pair, because it is having a point or line constant between cam and follower
.
In higher pairs, the contact surface
of the two links are dissimilar.
Hence, the correct option is (B).
&Key Points:-
1. Lower pair : It this elements of
pair having surface to surface to surface (or area) contact. Both have similar
contact surface.
2. Wrapping pair : When one link wraps
(having multiple point or line contact) over other links it is called wrapping
pair
Example : Belt and chain drive.
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