1. Water in the U tube shown is displaced by x and oscillates up and down. The acceleration of water surface is given by the equation a) Determine if this is SHM. b) If the length of the water column is 0.5m calculate the time period of the oscillation. Hint: Solution: 2. Show that the small amplitude oscillation of a ball rolling in the circular tube below is SHM and calculate the frequency of the oscillation.