Friction Part2#!#Angle of contact #!#Angle of friction

Minimum force is needed to move a block on rought surface, if theta = angle of friction. Angle of friction and angle of repose are numerically same.

Angle of friction and angle of repose are

Angle of Friction and Repose

COMPLETETION TYPE QUESTIONS: The coefficient of static friction is equal to the ______of the angle of friction.

Friction between any two surfaces in contact is the force that opposes the relative motion between them The force of limiting friction (F) between any two surfaces in contact is directly proportional to the normal reaction (R) between them F prop R or F = mu R where mu is coefficient of limiting friction If theta is angle of friction then mu = tan theta The angle of friction in the above question is .

The angle between the resultant contact force and the normal force exerted by a body on the other is called the angle of friction. Show that it lamda be the angle of friction and mu the coefficient of static friction. lamdaletan^-1mu .

A : Static friction force is a self adjusting force. R : The interatomic forces at the point of contact give rise to friction between the surfaces.

A force of 98N is just able to move a body of weight 45kg on a rough horizontal surface What are the coefficient of friction and angle of friction ? .