The length of a spring increases by6.9cm from its relaxed length when a mass of1.7kg is hanging in equilibrium from the spring.
(a) What is the spring constant?
N/cm
(b) How much elastic potential energy is stored in the spring?
J
(c) A different mass is suspended and the spring length increases by13.0cm from its relaxed length to its new equilibrium position. What is the second mass?
kg