You have alight spring which obeys Hooke's law. This spring stretches 3.18 cm vertically when a 3.00 kg object is suspended from it. Determine the following. (a) the force constant ofthe spring (in me) E N... (b) the distance (in cm) the spring stretches if you replace the 3.00 kg object with a 1.50 kg object E... (c) the amount of work (in J} an external agent must do to stretch the spring 9.40 cm from its unstretched position |:|J