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Liquidxlax
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Homework Statement
A body has rest mass of 10^5 Kg. Find how much work must be done on the body to give it a velocity such that the clocks on the body run at 1/10 of the rate of the lab clocks. compare the work energy with the rest energy of the body
Homework Equations
γ=1/√(1-(v/c)2)
E= T -moc2
The Attempt at a Solution
t'/10 = t where t' is the lab time and t is the rest frame time
so γ=10 (my prof assured me that i need not find the velocity)
Erest = moc2 = 3x1013J
So the object starts at rest and is accelerated up to a speed such that the clocks run at one tenth the time in the lab frame
the formula which i found in my textbook was
W=∫(dE/dt)dt = Ef-Ei
but this formula was not in the notes so I'm not sure if it is appropriate, yet I do have time end points t' -> t/10
yet I've seen other forumlas in which work was said to be
W = moc2(γ-1)
Some clarification would be nice :)