Relativity

[hibiscus23]

Hi could someone please help me with this question. I don't know where to start. :rolleyes:

A certain amount of energy is obtained from conversion of 5.00 grams of mass. How much mass could this energy raise to a height of 96 m?

[Tom Mattson]

Hi,

Use conservation of energy. The energy produced in the conversion (which you can caluculate by the most famous equation in physics) is equal to the gravitational potential energy. The only thing you don't know is the mass of the object that is raised to 96m.

[hibiscus23]

so it's 1/2mv^2 = mgh?
how would i get v?

If i use conservation of energy, then I don't have to use E=mc^2?

:confused:

[JJ]

You use mc^2=Mgh. mc^2 is still energy.

[Tom Mattson]

so it's 1/2mv^2


Is that the most famous equation in all of physics?

Nooooooo

C'mon, think Einstein.

[hibiscus23]

thanks...i actually realized how to do it when i looked through the chapter again...