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According to Kennedy’s theorem, if three bodies move relatively to each other, their instantaneous centres will lie on

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in Machine Kinematics by (38.0k points)
According to Kennedy’s theorem, if three bodies move relatively to each other, their instantaneous centres will lie on

(a) straight line

(b) parabolic curve

(c) triangle

(d) rectangle

This question was addressed to me in quiz.

Query is from Number of Degrees of Freedom for Plane Mechanisms in portion Simple Mechanisms of Machine Kinematics

1 Answer

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by (106k points)
The correct answer is (a) straight line

The explanation is: 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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