[填空题]
An object with mass 3.0 xm -amd f(9nbya-3oui2 y xfn,- y1/qykg is attached to a spring with spring stiffneazp5n :-j wztd2kq:wnin .l .;ss constant k = 280 N/mzktjniapw; w.nz:. qn2:dl- 5 and is executing simple harmonic motion. When the object is 0.020 m from its equilibrium position, it is moving with a speed of 0.55 m/s
(a) Calculate the amplitude of the motion. m
(b) Calculate the maximum velocity attained by the object.$\approx$ m/s (round to two decimal place)[Hint: Use conservation of energy.]