Friction formula is typically given as
Ff = μFn
The numeric’s are, the magnitude of friction is Ff , the coefficient of friction is μ and the magnitude of the normal force is Fn.
The Normal force is equivalent to the weight of the given body. Therefore, the Normal force (Fn) is articulated by:
Fn = mg
Where,
the mass of the object is m and g is the gravity.
The friction formula was made use of to compute the friction between any two given bodies.