Question

Write any four field applications of friction on horizontal

Answer 1

Almost all fastening devices rely on frictional forces to keep them in place once secured, examples being screws, nails, nuts, clips and clamps.

Satisfactory operation of brakes and clutches rely on frictional forces being present.

In the absence of frictional forces, most accelerations along a horizontal surface are impossible; for example, a person’s shoes just slip when walking is attempted and the tires of a car just rotate with no forward motion of the car being experienced.

Answer 2

1. The kinetic frictional force is smaller than the static.

2. The static frictional force can point toward the center of the circle, but the kinetic frictional force opposes the direction of motion, making it very difficult to regain control of the car and continue around the curve.