Thanks! I came across another question in which the normal force acts along the corner of the cube (to find the condition for toppling and sliding)! Thank you. =)
I came across a question in which a cubical body of mass 'm', edge 'a' is slipping down an inclination with constant velocity and torque due to normal contact force is to be found about the centre of the block.
As friction will exert an anticlockwise torque= 0.5amgsinx, where 'x' is the...