A solid sphere of mass 2.0kg and radius 30.0cm which is constrained to rotate about the vertical axis passing through the centre of the sphere. A

cord is wrapped around what would be the equator, passes over a pulley of negligible

mass and attached to a mass of 800g that is allowed to fall through the height of 1.5m

under the influence of gravity.

Find the,

(a) velocity of the hanging mass.

(b) angular momentum of the sphere.​

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.