Answers (cont.)
n2.) To find the force will use Fs=kx, but since you only know “x” you must find “k” also
nUse PEs=1/2kx2 to find “k”
nPEs=100J=1/2k(0.1m)2
nk=20 000N/m
nuse Fs=kx=20 000N/m x 0.1m
nFs=2000N