how is a mass of a proton moving at a high speed calculated experimentally?
"calculated" is not the same as "experimentally". Which are you asking about?how is a mass of a proton moving at a high speed calculated experimentally?
I'm assuming he's referring to "relativistic mass". And yes I know that's a seriously deprecated term which is why I put it in quotes, but I don't know what else to call it. Momentum, perhaps?There is nothing to calculate, the mass of a proton does not depend on its motion