Physics - Heat & Thermo Question with Solution | TestHub

A helium balloon is allowed to rise to a height such that the pressure is $1/32$ of the initial pressure $p_1$ on the ground. Its initial volume and temperature are $V_1$ and $T_1$ respectively. Assume that the envelope of the balloon is a perfect insulator and that the process is quasistatic. Calculate the amount of work done by the gas. If work is $\frac{\mathrm{a}}{\mathrm{b}}{\mathrm{p}}_1{\mathrm{v}}_1$, where a and b are co-prime. Find $\mathrm{a}+\mathrm{b}$.