Q. Suppose a hanging 1.0 kg lab mass is attached to a 4.0 kg block on the table. If the coefficient of kinectic friction, mu is 0.20., what is the acceleration of the block?
Q. A cylindrical steel shaft of radius 2cm is turned down on a lathe to one-half its radius for a distance of 20cm from one end. find the distance of its center of gravity from the thicker end.