The piston of a bicycle pump is circular in shape and has a diameter of 3.18 cm. When you exert a pushing force on the pump handle, it exerts a pressure of 225 kpa on the air inside the pump cylinder.
1) What is the force exerted on the pump handle?
2) What is the pressure of units of psi?
Note: the 225 kpa is gauge pressure. If the force on the handle had been zero, the gauge pressure would be zero because the pressure inside and outside the pump cylinder would be the same.
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