A spring that has a spring constant of 150 N/m is oriented vertically with one end on the ground.

(a) What distance does the spring compress when a 4-kg object is placed on its upper end? in m.

(b) By how much does the potential energy of the spring increase during the compression? in J.

1 answer

a. Wo = M*g = 4 * 9.8 = 39.2 N.

d = 39.2N. * 1m/150N. = 0.261 m.