⟩ At a constant temp. volume is inversly proportional to pressure. This is Boyles law. But, when u give pressure to a football, how the volume also increases?
Boyle's law states that" at a constant temperature the
volume of a GIVEN MASS of gas is inversely proportional to
the applied pressure.
This indicates not only the temp, but the mass must be
contstant.
But, when u apply pressure to a football, u r suplying air;
in fact u r not keeping the mass constant.
Hence Boyle's law can't be applied to this case.
Of course, when u supply only pressure from out side but
not air, definitely the volume will decrease.
