Q.

Is it true that there are mainly four types of friction?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
Different types of motion of the object give rise to different types of friction. Generally, there are 4 types of friction. They are static friction, sliding friction, rolling friction, and fluid friction. Static friction acts when the body is at rest. And there is much more intermolecular attraction between the object and the surface for a long time, which comes first. Rolling friction is the force that obstructs the motion of an object rolling across a surface; this is why wheels are used for most types of ground transportation, including bicycles, cars, and skates. Sliding friction acts on objects when they are sliding over a surface. Sliding friction is weaker than static friction, and fluid friction is friction that acts on objects moving through a fluid. A fluid is a substance that can flow and take the shape of its container. Fluids include liquids and gases.
 
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