**Friction Formula**

**Friction is the hindering force that comes into play when two items are interacting with each other.**

Friction formula is typically given as

The numeric’s are, the magnitude of friction is F_{f} , the coefficient of friction is μ and the magnitude of normal force is F_{n}.

The Normal force is equivalent to the Weight of the given body. Therefore, Normal force (F_{n}) is articulated by:

Where,

the mass of the object is m and g is the gravity.

Friction formula was made use of to compute the friction between any two given bodies.

**Friction Solved Examples**

Underneath are problems on friction which helps to know where the formula can be used:

**Problem 1: **A child is pulling a box of mass 10 Kg. What is the standard force acting and also calculate the frictional force if the coefficient of friction μ is 0.3?

**Answer:**

Given: Mass, m = 10 Kg,

Normal force, F_{n} =?

Normal force is given by F_{n} = mg

= 10 Kg × 9.8 m/s^{2}

= 98 N.

The Frictional force is articulated by F_{f}_{ }= μ F_{n}

= 0.3 × 98 N.

= 29.4 N.

**Problem 2: **Nancy of mass 40 Kg is slipping on the frost. If the coefficient of friction acting is 0.45. Find the frictional force acting between her and frost layer?

**Answer:**

Given: Mass m = 40 Kg,

Coefficient of friction μ = 0.3,

The Normal force is articulated by F_{n} = mg

= 40 Kg × 9.8 m/s^{2}

= 392 N.

The Frictional force is articulated by F_{f} = μ F_{n}

= 0.45 × 392 N

= 176.4 N.