Answer to Question #211354 in Field Theory for Weds

Question #211354

Find the mass of an object whose rest mass is 1000g when it is travelling at 90% of the speed of light?

Expert's answer

The mass of an object

"m=\\frac{m_0}{\\sqrt{1-\\frac{v^2}{c^2}}}=\\frac{1000\\:\\rm g}{\\sqrt{1-0.9^2}}=2294\\:\\rm g"

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