Define circular motion and uniform circular motion.

Choose the correct statement/statements related to uniform circular motion. (i)The acceleration in uniform circular motion is tangential to the circle. (ii)The acceleration in uniform circular motion is directed radially inwards. (iii)The velocity in uniform circular motion has constant magnitude. (iv)The velocity in uniform circular motion is directed radially inwards.

Show that linear S.H.M. is the projection of uniform circular motion on any diameter.