write about different types of friction
Answers
Answer:
There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Static friction is strongest, followed by sliding friction, and then rolling friction, which is weakest. Fluid friction occurs in fluids, which are liquids or gases.
Answer:
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Explanation:
Types Of Friction
Friction is defined as the force that opposes the motion of a solid object over another. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction. Friction and normal force are directly proportional to the contacting surfaces and it doesn’t depend on the hardness of the contacting surface. With the increase in relative speeds, the sliding friction reduces whereas fluid friction increases with the increase in the relative speed, also fluid friction is dependent on the viscosity of the fluid.
In sliding motion, each point on the body has only translational or linear motion. But in case of rolling motion, different points have a combination of linear as well as rotational motion.

Types Of friction
Types Of Friction
Following are the friction types which depend on the types of motion:
Static Friction
Sliding Friction
Rolling Friction
Fluid Friction
Static Friction
Static friction is defined as the frictional force that acts between the surfaces when they are at rest with respect to each other.
The magnitude of the static force is equal in the opposite direction when a small amount of force is applied. When the force increases, at some point maximum static friction is reached.
Static Friction Examples
Following are the examples of static friction:
Skiing against the snow
Creating heat by rubbing both the hands together
Table lamp resting on the table
Coefficient Of Static Friction
The coefficient of static friction is denoted as µs. The maximum force of static friction is given as the product of the coefficient of static friction and normal force and force of static friction is less than or equal to the product of the coefficient of static friction and normal force. It is given as:
Fs max = µs η and Fs ≤ µs η
Where,
Fs is the force of static friction
µs is the coefficient of static friction
η is the normal force
Fs max is the maximum force of static friction
Sliding Friction
What Is Sliding Friction?
Sliding friction is defined as the resistance that is created between any two objects when they are sliding against each other.
Examples Of Sliding Friction
Following are the examples of sliding friction:
Sliding of the block across the floor
Two cards sliding against each other in a deck
Coefficient Of Sliding Friction
The coefficient of sliding friction is denoted as µs. The force of sliding friction is defined as the product of the coefficient of sliding friction and the normal force. It is given as:
Fs = µs. Fn
Rolling Friction
What Is Rolling Friction?
Rolling friction is defined as the force which resists the motion of a ball or wheel and is the weakest types of friction.
Examples Of Rolling Friction
Following are the examples of rolling friction:
Rolling of the log on the ground
Wheels of the moving vehicles
Coefficient Of Rolling Friction
The coefficient of rolling friction is denoted as µr. The force of rolling friction is defined as the product of the coefficient of rolling friction and the normal force. It is given as:
Fs = µr. Fn
Fluid Friction
What Is Fluid Friction?
Fluid friction is defined as the friction that exists between the layers of the fluid when they are moving relative to each other.
Examples Of Fluid Friction
Following are the examples of fluid friction:
The flow of ink in pens
Swimming