A 2 kg mass moving along a horizontal surface at 10 m/s is acted upon by a 5 N force of friction. Calculate the net force?

The net force acting on the mass is equal to 13.6 Newton.

Given the following data:

We know that the acceleration due to gravity (g) of an object on planet Earth is equal to 9.8 .

To calculate the net force:

First of all, we would determine the normal force acting on the mass.

Mathematically, the normal force is given by the formula:

Where:

Substituting the given parameters into the formula, we have;

Normal force = 19.6 Newton

To find net force:

Net force = 13.6 Newton.

Note: We subtracted because friction opposes the motion of an object and as such acts in opposite direction.

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F = 20.61 N

Explanation:

Given that,

Mass of the object, m = 2 kg

It is moving with a speed of 10 m/s

It is acted upon by a 5 N of friction.

The force of gravity acts in downward direction which is given by :

W = mg

W = 2 × 10 = 20 N

5 N of force is acting in horizonal surface.

The net force is given by the resultant of two vectors as follows :

So, the net force acting on the object is 20.61 N.

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