net force + equilibrium?

Question

what is net force?

what is equilibrium??
n how are they related to eachother?
i have no clue please help mee

uhhh. i dont get the whole vector thing either

Answer 1

Any object can be acted on by a number of forces.

The resultant motion of the object depends upon the magnitued and direction of all such forces.

We can always replace all such forces and have a single force which effectively replaces all such forces .

That single force is equivalent in every respect to all other forces.

This force is called net or resultant of all such forces.

Equilibrium is a state when the resultant of all forces is zero.

That is if under the action of a number of forces the body is either in rest or in uniform motion then the resultant of all such forces is zero and the body is said to be in equilibrium.

However, even when the resultant of all forces is zero there may by a rotational motion .

For perfect equilibrium or for equilibrium of rotational motion
in addition to the translational motion , the resultant torque msust also be zero.

Answer 2

A force relative to the gravity of the earth is called weight.
We can have an equilibrium(balance of weights) on the see saw relative to the fulcrum of the see saw.For Example;
A 50 kilogram mother can balance her 10 kilogram boy on the other end by moving the proper distance to the fulcrum till equilibrium is reached.

The see saw balances a 500 newton weight(force)of the mother and a 100 newton force(weight of the boy).

There is really no such thing as a net force . Since forces always occurs in pairs and are always equal and opposite. The forces are justaposed but in their directions they each have a non zero value.

What really happens in equilibrium is a balance of energy in the see saw example.

The see saw balance two unequal weights. This is called equilibrium

Answer 3

Net force is the vector sum of all the the forces acting on a body.

If there is no net force (net force = 0 and by that it means there could be forces acting on the body, it's just that their vector sum is 0.) acting on a body, then the body is said to be in equilibrium.

Answer 4

At equilibrium, issues can no longer develop up yet can flow with a relentless speed. So it does not potential that the physique would desire to be table sure. and that i might decide to characteristic that for equilibrium internet torque would desire to additionally be 0.