Question

4.Is the friction same for all objects?

Answer 1

Answer:

A coefficient of friction is a value that shows the relationship between two objects and the normal reaction between the objects that are involved. It is a value that is sometimes used in physics to find an object's normal force or frictional force when other methods are unavailable.

The coefficient of friction is shown by {\displaystyle F_{f}=\mu F_{n}\,}{\displaystyle F_{f}=\mu F_{n}\,} . In that equation, {\displaystyle F_{f}}{\displaystyle F_{f}} is the frictional force, {\displaystyle \mu }\mu is the coefficient of friction, and {\displaystyle F_{n}\,}F_{n}\, is the normal force.

The coefficient {\displaystyle \mu }\mu can be two different things. It is either the coefficient of static friction {\displaystyle \mu _{s}}\mu_s, or the coefficient of Dynamic friction {\displaystyle \mu _{k}}\mu_k.The coefficient of static friction is the friction force between two objects when neither of the objects is moving.

Explanation:

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