Recent content by doner

i have combined it but i get F/N = 1/3 TAN@ But the question wants an expression with r and k in it also.

1. A solid disc of radius r, is rolling down a variable incline (a ramp). Show that the acceleration of the centre of mass, C is given by: a=g[ sinθ – F/Ncosθ ]. I have done this as shown below. N is the normal reaction and F is friction. N = mgcosθ F = µN = µmgcosθ mgsinθ – F = ma...