Dividing equ(2) by eq(1),we get
If N is the value of normal force when motion is impending, frictional force will be mN and hence
Hence, to avoid free sliding, the inclination angle should be less than the friction angle.
Friction |
∑forces normal to the plane =0, gives N=Wcosq ......................................................................................................(9.1) ∑forces normal to the plane =0, gives F=Wsinq ........................................................................................................(9.2) |