[填空题]
A 0.60-kg mass at the end of a y u (5mwuknufwmsg55::e g-y,sp xmt zx6iyz,s+))e5u fring vibrates 3.0 times per second with an amplitude of 5 ))6yuxmz ,feztsxi +0.13 m. Determine
(a) the velocity when it passes the equilibrium point,$\approx$ m/s(round to one decimal place)
(b) the velocity when it is 0.10 m from equilibrium, $\approx$ ± m/s(round to one decimal place)
(c) the total energy of the system,$\approx$ J(round to one decimal place)
(d) the equation describing the motion of the mass, assuming that x was a maximum at x = (0.13π)cos( πt)
