A) A 1-kg mass stretches a spring 5 cm. How far does the spring stretch when it supports 3-kg? b) Recall that weight is a force and according to Newton's 2nd Law W= mg. Use g = 9.8 m/s^2 to determine the weight of the 1 kg mass.
c) Use your determined weight for the F in the formula (weight is a Force) and Use Hooke's Law F = -kx, rearrange the terms to solve for the spring constant k in units of (N/cm).