The “gravitational force” is part of a theory of gravity that explains the phenomenon in terms of forces (so you can use Newton’s Laws of motion to make predictions). The force is attractive because the phenomenon is one of “accelerating together”. There is no way a repulsive force describes that.
Why gravity is 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.
Can the gravitational force be either attractive or repulsive?
Yes, both the force between charges and the gravitational force between matter can be either attractive or repulsive.
Why gravitational force is always attractive force?
Gravitational force is always attractive based on the traditional understanding of matter, which has a positive mass.
Why can the electric force be attractive or repulsive where the gravitational force is always attractive?
What is the main difference between electrical and gravitational forces? Explanation: Electric forces can be attractive or repulsive because charges may be positive or negative. In the case for gravitational forces, there are only attractive forces because mass is always positive.
Is gravitational force attractive or repulsive class 9?
We all know that all the forces in nature exist in opposites, but gravitational force is the only force that always attracts every object and never reples any.
Is gravitational force conservative or nonconservative?
vs. If the work done by a force depends only on initial and final positions, not on the path between them, the force is called a conservative force. Gravity force is “a” conservative force.
Is gravity a repulsive force?
The tension does not pull things together because it is equal on the opposite sides of any given region and so as a force in its own right it cancels out. However the contribution to gravity associated with it does not cancel out, and is always repulsive.
How do you know if a force is attractive or repulsive?
If the particles are both positively or negatively charged, the force is repulsive; if they are of opposite charge, it is attractive.
When can you say that an object have a repulsive force between them?
The constant ke is called Coulomb’s constant and is equal to 14πε, where ε is the electric constant; ke = 8.988×109 N⋅m2⋅C−2. If the product q1q2 is positive, the force between the two charges is repulsive; if the product is negative, the force between them is attractive.
Why can scientists ignore the gravitational force when studying the physics of an atom?
Why can scientists ignore the gravitational force when studying the physics of an atom? Scientists can ignore the gravitational force because the electrical force between protons and electrons in the atom is millions of times stronger than the gravitational force between the protons and electrons.