A string is wound over a circular disc. It is now unwound with its “ – McqOptions

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1.	A string is wound over a circular disc. It is now unwound with its “free end” letting it remain tight and tangent to the disc. The curve traced by the “free end” is
A.	Spiral
B.	Involute
C.	Cycloid
D.	Epicycloid
Answer» C. Cycloid

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