A thin circular dise of mass 'm' and radius 'R'rolls on a fixed sphere without sliding. Equation ofinotion of the disc is: 78. (a) 6- 3 (R+r) sin0 =0 sin 0=0 5 (R+r) AN (e) 6 2 (R+r) 1 sin 0 0 (a) 6 -sin 0=0 3 (R+r)