Uses of friction in our daily life activities:
Some of the important uses of friction include:
Walking And Running
Friction makes walking and
running possible. If there were no friction, we would be unable to move our legs
on the ground without slipping and falling, just like you would experience when
you try to move on a slippery surface, such as ice, which offers very little
Also, friction enables vehicles
to move controllably on the road without sliding or skidding, as it would have
if it were on a wet slippery road with little friction.
How Friction Enables a Car
to Move Forward
As the wheels rotate, the
bottom of the wheel pushes backwards on the road; the frictional force acting in
opposite direction tries to stop the tire. A reaction is generated at the axle,
which pushes the car forward.
Friction Belt Or Belt Drive
Friction is also used in the
friction belt or belt drive used in machines, such as a car engine’s fan belt.
The friction between the rubber
belt and pulley wheels is used to enable a pulley wheel connected to the engine
to drive a pulley wheel connected to the fan.
If a sudden force stops the fan
from turning, the belt will slip, and the engine is protected.
This is a very rough surface
used to wear away metal surfaces to sharpen chisels and knives.
coefficient of kinetic friction here
kinetic friction here
See static friction here
coefficient of static friction here
calculating friction here