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**1. The problem statement, all variables and given/known data**

Find the Linear momentum of an unwinding Cylinder with one end of a string attached to the ceiling. The mass of the cylinder is m and radius r. The cylinder is uniform and there is no slipping.

**2. Relevant equations**

Momentum, P = mv

moment of inertia , I = 1/2 MR^2

**3. The attempt at a solution**

distance from ceiling to point on cylinder , y = l(length of string unwound)

so is the momentum simply m*dl(t)/dt?

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