Question

When air is pumped into a cycle Tyre the volume and pressure of the air in the tire both are increased. What about Boyles's law in this case ?

Answer 1

Hi

Here is your answer,

When air is pumped, more molecules are pumped and Boyle's Law is stated for situation where number of molecules remains constant.

In this case, as the number of air molecules keep increasing. Hence, this is a case of variable mass. Boyle's Law (and even Charles law) is only applicable in situations, where number of gas molecules remains fixed.

Hence in this case Boyle's Law is not applicable.

Hope it helps you!

Answer 2

Here if the temperature is kept constant than Boyle's law is violated because Boyle's law states that the pressure and volume of a gas have an inverse relationship, when temperature is held constant.