Alcune formule di fisica
k = 981 , 7 ⋅ 10 − 3 N 13 , 9 ⋅ 10 − 2 m = 7 , 1 N / m {\displaystyle k={\frac {981,7\cdot 10^{-3}N}{13,9\cdot 10^{-2}m}}=7,1N/m}
x ¯ {\displaystyle {\overline {x}}}