Physics - Center of Mass Question with Solution | TestHub

If system = block A, potential energy of system is ${\mathrm{m}}_1{\mathrm{gh}}_1$

If system = block $\mathrm{A}+$ block $\mathrm{B}+$ spring, potential energy of the system is $\frac{1}{2}k{x}^2$

If system = block $\mathrm{A}+$ block $\mathrm{B}+$ spring, potential energy of the system is $\frac{1}{2}k{x}^2+{\mathrm{m}}_1{\mathrm{gh}}_1+{\mathrm{m}}_2{\mathrm{gh}}_2$

If system = block $\mathrm{A}+$ block $\mathrm{B}+$ spring + earth, potential energy of the system is $\frac{1}{2}k{x}^2+{\mathrm{m}}_1{\mathrm{gh}}_1$ $+{\mathrm{m}}_2{\mathrm{gh}}_2$