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According to Kennedy’s theorem the instantaneous centres of three bodies having relative motion lie on a

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in Machine Kinematics by (38.0k points)
According to Kennedy’s theorem the instantaneous centres of three bodies having relative motion lie on a

(a) curved path

(b) straight line

(c) point

(d) none of the mentioned

This question was posed to me at a job interview.

This interesting question is from Velocity of a Point on a Link by Relative Velocity Method in division Velocity in Mechanisms of Machine Kinematics

1 Answer

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by (106k points)
The correct option is (b) straight line

The best explanation: The Aronhold Kennedy’s theorem states that if three bodies move relatively to each other, they have three instantaneous centres and lie on a straight line.

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