An object has a coefficient of kinetic friction of 0.2 and a normal force of 30N. Find the force of kinetic friction.

A force that is present between two moving objects or surfaces is called kinetic friction. It is estimated in newtons (N) and is calculated by:

Where, = frictional force,    = coefficient, = normal force.

The kinetic friction of the object is 6N.

The kinetic friction can be estimated as:

Given,

Substituting values in the formula:

Therefore, 6N is the frictional force.

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Force of kinetic friction, Fk = 6N

Explanation:

Given the following data;

Coefficient of kinetic friction, μ = 0.2

Normal force, Fn=30N

To find the Force of kinetic friction;

Mathematically, the force of kinetic friction is given by the formula;

Fk = μFn

Where;

Substituting into the equation, we have;

Fk = 0.2*30

Fk = 6N

Therefore, the force of kinetic friction is 6N.

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation