Explain with neat sketch method of drawing displacement diagram for SHM of follower.

Explain with neat sketch method of drawing displacement diagram for SHM of follower. 
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Answer :

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The displacement diagram is drawn as follows for SHM of follower : 1. Draw a semi-circle on the follower stroke as diameter. 2. Divide the semi-circle into any number of even equal parts (say eight). 3. Divide the angular displacements of the cam during out stroke and return stroke into the same number of equal parts. 4. The displacement diagram is obtained by projecting the points as shown in Figure

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