8. IE ••

(a) At what position is the magnitude of the force on a mass in a horizontal mass-spring system minimum:

(1) x = 0, (2) x = −A, or (3) x = +A? Why?

(b) If m = 0.500 kg, k = 150 N/m, and A = 0.150 m, what are the magnitude of the force on the mass and its acceleration at x = 0, 0.050 and 0.150 m?