A massspring system is in SHM in the horizontal direction. If the mass is 0.25 kg, the

Question:

A mass–spring system is in SHM in the horizontal direction. If the mass is 0.25 kg, the spring constant is 12 N/m, and the amplitude is 15 cm,
(a) What is the maximum speed of the mass, and
(b) Where does this occur?
(c) What is the speed at a half-amplitude position?