State the postulate of equal a priori probabılities 5 (5) (b) considera system consısting of two weakly interacting particles, each of mass m and free to move in one dirmension denote the respective position coordinates of the two particles by and 12, their respective momenta by pi and p2 the are confined within a box with end walls located at i = particles 0 and z l the total energy of the system is known to lie between e and e+de since it is difficult to draw a four-dimensional phase space, draw separately the part of the phase space involving r1 and 2 and that involving pi and p2 indicate on (20) these diagrams the regions of phase space accessible to the system