Question:
Which one of the following is an open pair?
Which one of the following is an open pair?
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If a mechanism relies on external force to maintain contact between two components, it's typically an open pair.
Updated On: Jun 21, 2025
- Ball and socket joint
- Journal bearing
- Lead screw and nut
- Cam and follower
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The Correct Option is D
Solution and Explanation
Pairs in kinematics can be categorized as open or closed based on the type of contact.
Closed pairs are those in which the two elements are held together mechanically (e.g., ball and socket joint, lead screw and nut).
Open pairs, on the other hand, have surface or point contact and require external force to maintain contact.
The cam and follower mechanism is an example of an open pair, as the follower remains in contact with the cam only due to an external force like a spring or gravity.
Closed pairs are those in which the two elements are held together mechanically (e.g., ball and socket joint, lead screw and nut).
Open pairs, on the other hand, have surface or point contact and require external force to maintain contact.
The cam and follower mechanism is an example of an open pair, as the follower remains in contact with the cam only due to an external force like a spring or gravity.
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