Question 64

A ribbon of uniform width and length l is wound around a right circular cylinder to completely cover its curved surface. If the circumference of the base of the cylinder is c, then the number of turns of the ribbon around the cylinder is:

Solution

A ribbon of uniform width and length l is wound around right circular cylinder to completely cover its curved surface.

circumference  of the cylinder = c 

Length of wire = l

no. of Turns = $$\frac{length\ of\ wire}{circumference}$$

no. of  Turns = $$\frac{l}{c}$$


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