Acme Posted December 20, 2014 Share Posted December 20, 2014 Correction, mass (inertial) is an invariant. What increases is the total energy, not the mass: [math](m_0c^2)^2=E^2-(pc)^2[/math] So I get the idea concerning magnetism when there is an alignment, but I'm unclear about heat adding [effective] mass. Could you expound on that? Link to comment Share on other sites More sharing options...
Strange Posted December 20, 2014 Share Posted December 20, 2014 So I get the idea concerning magnetism when there is an alignment, but I'm unclear about heat adding [effective] mass. Could you expound on that? Heat is energy. Energy has a gravitational effect, just like mass. Link to comment Share on other sites More sharing options...
Commander Posted December 20, 2014 Author Share Posted December 20, 2014 Heat is energy. Energy has a gravitational effect, just like mass. Yes, that's the point ! Link to comment Share on other sites More sharing options...
Robittybob1 Posted December 20, 2014 Share Posted December 20, 2014 Heat is energy. Energy has a gravitational effect, just like mass. Energy has a gravitational effect as long as there is no motion, energy involved with the motion (kinetic energy) doesn't seem to affect the rest mass at any stage. Is that also right? Link to comment Share on other sites More sharing options...
Strange Posted December 20, 2014 Share Posted December 20, 2014 Energy has a gravitational effect as long as there is no motion, energy involved with the motion (kinetic energy) doesn't seem to affect the rest mass at any stage. Is that also right? Kinetic energy also has an equivalent gravitational effect. Link to comment Share on other sites More sharing options...
Robittybob1 Posted December 20, 2014 Share Posted December 20, 2014 Kinetic energy also has an equivalent gravitational effect. Now I am confused. I thought there has a lot of talk about saying the rest mass stays the same! Link to comment Share on other sites More sharing options...
Strange Posted December 21, 2014 Share Posted December 21, 2014 Now I am confused. I thought there has a lot of talk about saying the rest mass stays the same! Rest mass does stay the same. The "relativistic mass" is the rest mass plus the energy. This is why objects are said to increase in mass as the velocity increases. (A lot of people don't like this being described as relativistic mass, as it can be confusing.) Link to comment Share on other sites More sharing options...
ZVBXRPL Posted December 29, 2014 Share Posted December 29, 2014 As X, Y and Z have different energy levels I would say that the weight is different for all 3. For Z not only is there a difference in energy levels but there is also the gap between the 2 iron circles, this contains energy and mass to add to the total (or are they weighed without the gap?) Link to comment Share on other sites More sharing options...
Commander Posted December 29, 2014 Author Share Posted December 29, 2014 As X, Y and Z have different energy levels I would say that the weight is different for all 3. For Z not only is there a difference in energy levels but there is also the gap between the 2 iron circles, this contains energy and mass to add to the total (or are they weighed without the gap?) good point Link to comment Share on other sites More sharing options...
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