Question

What do you mean by net force?

Answer 1

Net force:

1. The sum of all the forces acting on an object is defined as the net force.
2. Newton's Second Law states that when an object accelerates, there must be a net force acting on it.
3. If an object's net force is zero, the object is not accelerating and is in a state known as equilibrium.
4. In free fall, for example, the net force on an object equals its weight – the single force pulling on it.
5. When a force is applied to the body, not only is the applied force acting, there are many other forces like gravitational force ${\mathrm{F}}_{\mathrm{g}}$, frictional force ${\mathrm{F}}_{\mathrm{f}}$, and the normal force that balances the other force.
6. Therefore, the net force formula is given by,

$F_{net}=F_a+F_g+F_f+F_N$