Project ForgeTheory of Machines
Kinematics of Mechanisms
GATE 2016
Medium
A rigid link PQ is undergoing plane motion (VP and VQ are both non-zero). VQP is the relative velocity of point Q with respect to point P. Which one of the following is TRUE?
- AVQP has components along and perpendicular to PQ
- BVQP has only one component directed from P to Q
- CVQP has only one component directed from Q to P
- VQP has only one component perpendicular to PQ
Explanation
For a rigid link, the distance PQ cannot change, so the relative velocity of any point with respect to another point on the SAME rigid body has no component along the link — only a component perpendicular to it.
Source: GATE ME 2016 Set-3 (2016)
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