[填空题]
An object with mass 3.0 kg is attached to a sprin i:3 rsql(kqq m0hw:8fg wit lx3 shh +k0er*b.y*qe+c n+mhh spring stiffness constant k = 280 N/m and is executine0+k n. *be 3q++rch sm*yxhlhg 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.]
