The difference in the Potential energies between two arbitrary positions downward displacements x1 and x2. (x2 > x1)

\(\frac{1}{2}k\left[ {{{\left( {{x_1}} \right)}^2} - {{\left( {{x_2}} \right)}^2}} \right]\)

\(\frac{1}{2}k{\left[ {{x_1} - {x_2}} \right]^2}\)

\(\frac{1}{2}k\left[ {{{\left( {{x_2}} \right)}^2} - {{\left( {{x_1}} \right)}^2}} \right]\)

\(\frac{1}{2}k\left[ {{x_1} - {x_2}} \right]\)

The difference in the Potential energies between two arbitrary positio

1.	The difference in the Potential energies between two arbitrary positions downward displacements x1 and x2. (x2 > x1)
A.	\(\frac{1}{2}k{\left[ {{x_1} - {x_2}} \right]^2}\)
B.	\(\frac{1}{2}k\left[ {{{\left( {{x_2}} \right)}^2} - {{\left( {{x_1}} \right)}^2}} \right]\)
C.	\(\frac{1}{2}k\left[ {{{\left( {{x_1}} \right)}^2} - {{\left( {{x_2}} \right)}^2}} \right]\)
D.	\(\frac{1}{2}k\left[ {{x_1} - {x_2}} \right]\)
Answer» C. \(\frac{1}{2}k\left[ {{{\left( {{x_1}} \right)}^2} - {{\left( {{x_2}} \right)}^2}} \right]\)