A positive force can be both attractive and repulsive in nature. A negative force implies attractive nature.
Can positive force be 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. This called Coulomb’s law and was the first attempt to understand the electric force. Like the gravitational force, the Coulomb force is an inverse square law.
Which type of force can have both attractive and repulsive forces?
Electromagnetic forces can be either attractive or repulsive. They are long-range forces, which act over extremely large distances, and they nearly cancel for macroscopic objects.
Is repulsion positive or negative?
Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges. The size of the force varies inversely as the square of the distance between the two charges.
Is a positive potential repulsive?
It depends. Remember the rule: Opposites attract; Likes repel. A positive charge would be repelled by something that already has a positive potential, while a negative charge would be attracted to the very same object.
Why is positive force repulsive?
Where F is the force, k is Coulomb’s constant, q1 and q2 are the charges on the two particles, and r is the distance between the particles. … 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).
Can both the electrostatic force and 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.
Can gravity be both attractive and repulsive?
Both in the Newton theory of gravitation and in the General Theory of Relativity the gravitational force is exclusively attractive one. However, the quantization of gravity shows that the gravitational forces can also be repulsive .
Which type of force is attractive as well as repulsive in nature *?
Therefore, the electrostatic force is a non contact force which may be both attractive and repulsive in nature.
Is strong nuclear force attractive or repulsive?
The nuclear force is powerfully attractive between nucleons at distances of about 1 femtometre (fm, or 1.0 × 10−15 metres), but it rapidly decreases to insignificance at distances beyond about 2.5 fm. At distances less than 0.7 fm, the nuclear force becomes repulsive.
What does positive force mean?
This means that to do work, in physics, you need to push or pull on something, and while pushing or pulling, you have to make it move. … Now, if the force and displacement happen to be in the same direction, that’s when we say work done is positive, it’s a positive number.
What is repulsive Coulomb force?
The electric force between charged bodies at rest is conventionally called electrostatic force or Coulomb force. … If the charges have the same sign, the electrostatic force between them is repulsive; if they have different signs, the force between them is attractive.
What is a positive force?
When force and displacement are in the same direction, the work performed on an object is said to be positive work. Example: When a body moves on the horizontal surface, force and displacement act in the forward path. The work is done in this case known as Positive work.
Is negative potential energy attractive or repulsive?
U=−rGMm. This is a negative value for two reasons; the force acting between them is attractive, and the zero of potential energy is at infinite separation. This is a negative result if the force between the two charges is attractive (they are opposite) and positive if it is repulsive (the charges are similar).
Which bond is balanced attractive and repulsive forces between atoms?
Description of chemical bond Chemical bond involves only attraction between atoms. (12/14) “It is a matter of attraction. The electrons are attracted to the nuclei because the nuclei are positive and the electrons are negative.” Chemical bond involves both attraction and repulsion forces.
Why attractive forces decrease potential energy?
As the atoms first begin to interact, the attractive force is stronger than the repulsive force and so the potential energy of the system decreases, as seen in the diagram. Remember that the lower potential energy increases the stability of the system.