Light and Conservation of Energy

[paradoxes]

Sorry if this is posted in the wrong place, I'm new to this forum.

If an object in negatively charged and it is in oscillating motion is produces light waves which have energy. Does this mean that if I had a negatively charged pendulum in a vacuum (no friction/air resistance) it would eventually slow down where as a neutrally charged pendulum wouldn't?

Thanks in advance for a response.

 

[jtbell]

Yes, the pendulum would decrease its amplitude, somewhat as if there were air resistance.

 

[paradoxes]

Thanks

 

[UltrafastPED]

Sorry if this is posted in the wrong place, I'm new to this forum.

If an object in negatively charged and it is in oscillating motion is produces light waves which have energy. Does this mean that if I had a negatively charged pendulum in a vacuum (no friction/air resistance) it would eventually slow down where as a neutrally charged pendulum wouldn't?

And as an interesting side note: the binary neutron stars, PSR B1913+16, discovered in 1974, were shown to be losing energy as a system ... and the calculation showed that the gravitational radiation predicted by Einstein's General Relativity predicted the energy loss with great accuracy:
http://en.wikipedia.org/wiki/PSR_B1913+16

So yes, mechanical systems can lose energy by means of radiation: electromagnetic or gravitational.

 

[sardar]

I can confirm that the production of light waves by an oscillating object is a result of the conservation of energy. When an object is negatively charged and in oscillating motion, it is constantly converting its potential energy into kinetic energy and back again. This conversion of energy creates electromagnetic waves, which we perceive as light.

In a vacuum, where there is no friction or air resistance, the negatively charged pendulum would continue to oscillate indefinitely, as there is no external force acting upon it to slow it down. However, a neutrally charged pendulum would eventually slow down due to the effects of friction and air resistance, which would convert its kinetic energy into other forms of energy and cause it to come to a stop.

The conservation of energy is a fundamental principle in physics, which states that energy cannot be created or destroyed, only transformed from one form to another. In this case, the energy of the oscillating pendulum is transformed into light waves, which carry away the energy from the system.

I hope this helps to clarify your question. If you have any further inquiries, please feel free to ask. Thank you for your interest in science!