College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Centripetal Force
A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal for…
Question

A rigid link PQ of length 3 m is moving in space as shown in the figure. The magnitude and direction of velocity at point Q and direction of velocity at point P are given. Find magnitude of velocity at point P at this instant.

V 2 m/s 0 60 30°
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Transcribed Image Text:V 2 m/s 0 60 30°
Expert Solution
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Step 1

Link PQ is in General Plane Motion, we can find velocity any point on link PQ  by locating instantaneous center of rotation of link PQ.

To locate instantaneous centre of rotation, follow these steps:

 (1)Choose any two points on the rod ,

(2)Draw velocity vectors of these two points.

 (3) Draw perpendiculars to the velocity vectors, wherever these two perpendiculars intersect that gives the instantaneous centre of rotation of the rod.

Step 2

Since velocity vectors at points P and Q are given in the question, draw perpendiculars to the velocity vectors at points P and Q to locate instantaneous center of rotation of the rod (point O) as shown in Figure 1.

Physics homework question answer, Step 2, Image 1
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