[填空题]
At a 755-g mass at rest on the end of a horizontal spring (k =kcp,7 o3 ydqdv f-8ra: 1*x i84 yyvxu;sq8dv-zytnf+ 624 N/m) is stru8 8vuyst4z6f*+;v yqx n-xyidck by a hammer, which gives the mass an initial speed of 2.96m/s Determine
(a) the period and frequency of the motion, s Hz
(b) the amplitude, m
(c) the maximum acceleration, $m/s^2$
(d) the position as a function of time, x = ( m)sin(4.08$\pi$t)
(e) the total energy. J