# In both cases force is being applied?

• Miraj Kayastha
In summary, when a positive charge is pushed towards another positive charge, the potential energy of the system increases. However, when a negative charge attracts a positive charge, the system does not gain potential energy because the direction of the force is opposite, resulting in opposite work done and a change in potential energy. Negative work done means a loss in potential energy or kinetic energy. The system would be more stable if the negative charge was closer to the positive charge, as the work done and energy spent would be stored in the system and released to pull the charges together.
Miraj Kayastha
If a positive charge is pushed towards another positive charge then the potential energy of the system increases.

When negative charge attracts positive charge why doesn't the system gain potential energy?

In both cases force is being applied?

The direction of the force is opposite, so the work done is opposite and therefore the change in potential energy is opposite.

Does negative work done mean loss in potential energy?

Or loss in KE, yes.

the system would be more stable if the negative charge was closer to the positive charge , so the work done * energy spent * was actually energy stored in the system that was released to pull the charges together

## 1. What is force?

Force is a physical quantity that describes the interaction between two objects. It is a vector quantity, meaning it has both magnitude and direction.

## 2. How is force applied?

Force can be applied in many ways, such as pushing, pulling, twisting, or lifting. It can also be applied using tools or machines, like a hammer or a lever.

## 3. What are some examples of force being applied?

Some common examples of force being applied include pushing a door open, pulling a wagon, lifting weights, and using a hammer to drive a nail.

## 4. What is the difference between contact and non-contact forces?

Contact forces require direct physical contact between two objects, while non-contact forces act at a distance without physical contact. Examples of non-contact forces include gravity and magnetic forces.

## 5. How does force affect motion?

Force is directly related to an object's motion. It can cause an object to speed up, slow down, change direction, or remain at rest. This relationship is described by Newton's second law of motion: F=ma, where F is force, m is mass, and a is acceleration.

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