A 1.5-kg block B is connected by a cord to a 2-kg block A, which is suspended from a spring of constant 3 kN/m. Knowing that the system is at rest when the cord is cut, determine
(a) the frequency, the amplitude, and the maximum velocity of the resulting motion,
(b) the minimum tension that will occur in the spring during the motion,
(c) the velocity of block A 0.3 s after the cord has been cut.
