Is electric force attractive or repulsive?
Second, gravitational forces are only attractive; electrical forces can be either attractive or repulsive. The inverse square relationship between force and distance that is woven into the equation is common to both non-contact forces.
Is attractive force positive or negative?
When the charges have opposite sign, the force is attractive (negative F), while if both charges have the same sign, the force is repulsive (positive F).
Why gravitation is always attractive?
Gravitational force is always attractive based on the traditional understanding of matter, which has a positive mass. As long as the mass of the objects is positive, the formula for calculating the magnitude of gravitational force is also positive, resulting in an attractive force.
What does force Cannot change?
Force is the cause of change in the state of motion of a body or an object. It is a quantitative description of an interaction that causes a change in an object’s motion. Force can cause an object to move or accelerate, to slow down or decelerate, to stop or to change its direction.
Why is gravity not repulsive?
In the case of gravity, mediated by spin 2 particles, charge is mass, which is always positive. Thus, q1q2 is always greater than zero, and gravity is always attractive. For spin 0 force mediators, however, there is no restriction on the charges and you can very well have repulsive forces.
What happens if Coulomb’s force disappears?
What happens if Coulomb’s force disappears? Disappearance of coulomb force removes the energy barrier that holds nuclei of the atoms apart. The same is conceivable to happen to Earth and all light elements start to fuse and eventually make iron nuclei. There will be a dramatic volumetric collapse and release of energy.