# Net force =0 or Net force =GM^2/4R^2....?

• BLUE PEARL
In summary, the net force on each star of equal mass M, moving with constant speed V in a circular orbital of radius R about their common center of mass, is given by the formula net force=GM^2/4R^2. This net force is not equal to zero because, despite being in translational equilibrium, the stars are still subject to a centripetal force that keeps them in their circular orbit. This is due to Newton's first and second laws of motion.

#### BLUE PEARL

Two stars of equal mass M move with constant speed V in a circular orbital of radius R about their common center of mass .What is the net force on each star?the answer to this question was net force=GM^2/4R^2 .I want to ask that why net force not equal to zero although it is in translational equilibrium?

Any help in this regard would be appreciated...Thank You in anticipation

BLUE PEARL said:
Two stars of equal mass M move with constant speed V in a circular orbital of radius R about their common center of mass .What is the net force on each star?the answer to this question was net force=GM^2/4R^2 .I want to ask that why net force not equal to zero although it is in translational equilibrium?

Any help in this regard would be appreciated...Thank You in anticipation

If something is in a circular orbit, how can the force on it be 0? Newton's first/second laws apply.

## 1. What is net force?

Net force is the overall force acting on an object, taking into account the magnitude and direction of all individual forces.

## 2. What does it mean when net force is equal to 0?

When net force is equal to 0, it means that all individual forces acting on an object are balanced and there is no acceleration in any direction.

## 3. How is the net force calculated?

Net force is calculated by adding together all the individual forces acting on an object, taking into account their direction and magnitude.

## 4. What is the significance of the equation Net force = GM^2/4R^2?

This equation shows the relationship between net force and the gravitational force between two objects, where G is the universal gravitational constant, M is the mass of one object, and R is the distance between the two objects.

## 5. Can the net force ever be greater than GM^2/4R^2?

Yes, the net force can be greater than GM^2/4R^2 if there are other forces acting on the object in addition to the gravitational force, such as friction or air resistance.