You have a light spring which obeys Hooke's law. This spring stretches 2.88 cm vertically when a 3.00 kg object is suspended from it. Determine the following.
he force constant of the spring (in N/m)
the distance (in cm) the spring stretches if you replace the 3.00 kg object with a 1.50 kg object
the amount of work (in J) an external agent must do to stretch the spring 6.80 cm from its unstretched position