2.18 The weight of an object on an orbiting space vehicle is measured to be 42 N based on an artificial gravitational acceleration of 6 m/s². What is the weight of the object, in N, on earth, where g = 9.81 m/s²?
2.24 A system consists of air in a piston-cylinder assembly, initially at $p_1$ = 20 lbf/in.$^2$, and occupying a volume of 1.5 ft$^3$. The air is compressed to $p_2$ = 100 lbf/in.$^2$ and a final volume of 0.5 ft$^3$. During the process, the relation between pressure and volume is linear. Determine the pressure, in lbf/in.$^2$, at an intermediate state where the volume is 1.2 ft$^3$, and sketch the process on a graph of pressure versus volume.