In a certain accelerator, protons of kinetic energy 1.6 x 10^-7 J move round a circular path of diameter 2000m .
(a) the centripetal acceleration
(b) the mass
ans for a is 9x10^13 ms-2, for b is 1.78 x 10^-24 kg
centripetal acceleration = v^2 / r
relativistic KE = (gamma - 1)mc^2
The Attempt at a Solution
I initially thought I could use the relativistic KE formula to find the velocity of the protons, then find the centripetal acceleration (and i got the answer, apparently, using the mass of protons as 1.67 x 10^-27, but this would contradict with the second part).
I'm not so sure why the mass of the protons would differ and how to go about getting the centripetal acceleration, otherwise ><..
thanks for any help :)