A hand-driven tire pump has a 2.50 cm diameter piston and a maximum stroke of 34.0 cm.
(a) How much work do you do in one stroke if the average gauge pressure is 2.40 ? 105 N/m2 (about 35 psi)? (You may consider this an isothermal process.)
J
(b) What average force do you exert on the piston, neglecting friction and gravity?
N