Ross A. Finlayson wrote:

So, any mass under acceleration gains mass, because F = ma and c is the
speed of light?

Then, if you have a ring cyclotron on a barge, and you can recover the
energy from accelerating particles by slowing them with 100%
efficiency, can't that cause oscillations on the lake, yet the ring
cyclotron would be at equilibrium?


Ross--Are you confusing velocity with acceleration?

Velocity
http://scienceworld.wolfram.com/physics/Velocity.html

Relativistic Mass
http://scienceworld.wolfram.com/phys...isticMass.html

Acceleration
http://scienceworld.wolfram.com/phys...eleration.html