[填空题]
A tuning fork vibrates at a5mmrds0pjb2, : k dm.v frequency of 264 Hz, ajrv d0n-5g n9und the tip of each prong moves 1.8 mm to eitheru n0-vjn59dg r side of center. Calculate
(a) the maximum speed m/s
(b) the maximum acceleration of the tip of a prong. $m/s^2$