{b} The variation with displacement x of the potential energy E, of the oscillations of the ball is shown in Fig. 3.3. 25 .- 1.5 'l.0 0.5 0.5 1.0 1.5 xJ'cm Fig. 3.3 ti} On The axes of Fig. 3.3, sketch a graph to showI the variation wiTh displacement xof The kinetic energy of The ball. [2] {ii} The amplitude of The oscillations reduces over a long period of time. After many oscillations, The amplitude of the oscillations is Ocm. Use Fig. 3.3 to determine The total energy ofthe oscillations of the ball for oscillations of amplitude 0.60m. Explain your working. energy = .............................................. J [2] 2 A metal ball is suspended from a xed point by means ufa string. as illustrated in Fig. 3.1. Fig.3.1 The ball is given a small displacement and then released. The variation with time t of the displacement x of the ball is shown in Fig. 3.2. Fig.3.2 (a) [i] State Mo times at which the speed of The ball is a maximum. time = ____________________________ s and time = ____________________________ s [1] [ii] Show that the maximum speed of the ball is approximately 0.08m s\