Energy can't create or destroy

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In summary, according to the law of conservation of energy, energy cannot be created or destroyed. Gravity is not energy, but a force. The potential energy of an object due to gravity depends on its position and is created by the work done to put it in that position. The existence of gravity is tied to the presence of gravitational potential energy. The question of where the initial gravitational potential energy of the universe came from is a philosophical one.
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ccording to energy of conservation, energy can't create or destroy.
So, where does the Gravity in Earth come from??
 
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Gravity is not energy, gravity is force (and there is no "conservation of force law"). The POTENTIAL ENERGY due to the force of gravity on an object depends upon the position of the object and is "created" by the work done to put the object in that position.
 
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On the other hand, a bit philosophical though, gravity only exists if a body has gravitational potential energy. What's your comment on that?

The question might look simple, but too me it isn't.
 
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Originally posted by way2go
On the other hand, a bit philosophical though, gravity only exists if a body has gravitational potential energy. What's your comment on that?

The question might look simple, but too me it isn't.
[?] [?] It really is simple. Potential energy is just that - potential energy. You can convert it to kinetic energy and back, but you don't ever get anything for free. It does not violate conservation.

However, if you are asking where the initial gravitational potential energy of the universe came from - that's the big bang. Where did the BB come from? Now you're into philosophy.
 
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1. What is the law of conservation of energy?

The law of conservation of energy states that energy cannot be created or destroyed, it can only be transformed from one form to another.

2. Is it possible to create energy out of nothing?

No, according to the law of conservation of energy, energy cannot be created out of nothing. It can only be converted from one form to another.

3. How does this law apply to everyday life?

In everyday life, this law applies to all energy conversions, such as when we use electricity to power our devices or when we consume food for energy. The total amount of energy remains the same, it just changes form.

4. Can energy be destroyed?

No, energy cannot be destroyed. It can only be converted into a different form, such as heat, light, or motion.

5. How was this law discovered?

The law of conservation of energy was first proposed by a German physicist, Julius Robert Mayer, in 1842. It was later confirmed and further developed by other scientists, including James Joule and Hermann von Helmholtz.

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