Why the mesaure of the sphere doesn't play a part at the pendulum???

Answer 1

IT is because in a pendelum, the force of gravity on the inertia of the mass is countered exactly as it falls, and rises. If the sphere is larger, it has a larger force going downward, but it also has a larger force retarding it going up. The mass of the sphere is irrevelent in considering the change of motion (acceleartion) as the gravity force is directly proportional to Mass, but acceleartion is inversly proportional to mass, ie, acceleration=constant*Mass/Mass

Answer 2

thanks a lot