Static Friction

A vehicle moves safe on rough curved and unbanked road Then (a) The direction of static friction is radially out wards (b) The direction of static friction is radially inwards (c ) The direction of kinetic friction is tangential to curved path (d) Static friction does not exist .

Assertion : Static friction is a self-adjusting force upto its limit mu_(s)N "where" mu_(s) is the coefficient of static friction. Reason: One can use the equation f_(s)=mu_(s)N only when the maximum value of static friction comes into play

Static And Kinetic Friction

Examples on Static and Kinetic Friction

Static and Kinetic Friction

Static and Kinetic Friction

Work Done By Static And Kinetic Friction

Static and Kinetic Friction|| Angle OF Friction|| Angle OF Repose

Choose the correct options – (1) Friction always opposes the motion (2) Friction may opposes the motion (3) If the applied force is increased the force of static friction remains constant. (4) If the applied force is increased the force of static friction also increases upto limiting friction.