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Which of the following is a lower pair?

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+1 vote
in Machine Kinematics by (38.0k points)
Which of the following is a lower pair?

(a) Pulleys in belt drive

(b) Cam and follower

(c) Belt drive

(d) Ball and socket joint

This question was posed to me in an online interview.

My question is taken from Motion of a Link in portion Velocity in Mechanisms of Machine Kinematics

1 Answer

0 votes
by (106k points)
Correct answer is (d) Ball and socket joint

Explanation: If two moving elements do not have surface contact in motion, then the pair is known as lower pair, in the given question ball and socket joint is a lower pair.

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