A string is wound around a uniform disc ofradius 0.49 m and mass 2.2 kg. The disc isreleased from rest with the string vertical andits top end tied to a fixed support.Calculate the speed of the center of masswhen, after starting from rest, the center ofmass has fallen 3.1 m. The acceleration ofgravity is 9.8 m/s^2. Answer in units of m/s.

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Center of Gravity of a system

The centre of gravity is a property that is based on the geometry of a rigid body or any particle. It is described as an equilibrium point or a hypothetical location where the total weight of the body is concentrated.