jcsd
Science Advisor
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You may well encounter the concept of relativistic mass in the future, though it is not *supposed* to be an oft-used term and it's use is discouraged it isn't completely moribund and merits a paragraph in most physics dictionaries and physics refernce sites (for example: http://scienceworld.wolfram.com/physics/RelativisticMass.html)baffledMatt said:Yes, I see that now. Thanks for showing me this alternate point of view.
Matt
Also remember that the relativistic mass of an object in an inetrial reference frame is also it's inertial and hence (by the equivalence principle) it's gravitational mass.