# Special Relativity: Relativistic Mass

In a joint Hungarian-German study, a solidified ice block of Hydrogen ($H^1_1$) was accelerated to $0.75c$, where $c$ is the speed of light in vacuum. Determine the observable relativistic mass ($M$) of the $H^1_1$ block when the rest mass ($m_{\circ}$) is $92 \text{ kg }$ by using the following formula:

$M = \gamma m_{\circ} = \frac{m_{\circ}}{ \sqrt{1 - \frac{v^2}{c^2}}}$

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