Define angle of friction.

Define force of friction. How does the use of ball bearing reduce friction ?

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

The coefficent of friction mu and the angle of friction lamda are related as

If mu = coefficient of friction and theta is the angle of friction, then

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.

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.

What is the relation between angle of friction and angle of repose