When the surface of a moving object is in contact with another object or surface (floor) the stationary object puts force on the moving object and tries to slow down it down or stop it's movement altogether across a surface.This force is called friction.
Friction acts in the opposite direction to the motion of the object and slow down its motion.
Similarly when a book slides across the surface of a table, friction from the tables moves in the opposite direction of the motion of the book and slows it down.
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Advantages of Friction
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Friction between the soles of our shoes and the ground help us to gripthe floor and allows us to walk with out falling.
Sometimes, we need to change the texture of a surface or select a particular type of a surface to increase friction for safety reasons.
🖤🖤Disadvantages of fricy🖤🖤
People face difficulty in moving heavy objects actions rough ground because the bottom of the object rubs against the ground, creating friction.
in machines, friction can cause wear and tear on parts , leading to damage .
TO reduce friction, lubricants like grease and oil are used to protect the machine.
The tyres of acar wear out due to friction with road.
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🖤🖤Ways to reduce friction 🖤🖤
🕳️🖤 Lubrication
The most common method of reducing friction is by applying lubricants like oil
Or grease . This makes surface smoother and allows object to move more easily
🕳️🖤2 Streamlining Objects
The more streamlined and object is, less friction it experiences
Dolphins have streamlined bodies,which help them swim swiftly by reducing friction.
vehicles like cars marine,rockets and shop are designed with streamlined shapes to minimize air and water resistance.
🕳️🖤3 smoothing surface
Friction can also be reduced by decreasing the contact between surfaces.
This can done by using sandpaper or grinding surface to make them smoothers .
