hvdev199517 hvdev199517

14-05-2014
Mathematics

Answered

solve for m in E=1/2mv²+mgh

Answer :

kate200468 kate200468

15-05-2014

[tex]E= \frac{1}{2} mv^2+mgh\ /\cdot2\\\\2E=mv^2+2mgh\\\\2E=m(v^2+2gh)\ /:(v^2+2gh)\\\\m= \frac{2E}{v^2+2gh} [/tex]

Answer Link

15-05-2014

[tex]E= \frac{1}{2}mv^2+mgh \ \ / \cdot 2\\ \\ 2 \cdot \frac{1}{2}mv^2+ 2\cdotmgh = 2\cdot E\\ \\ mv^2+2mgh= 2E \\ \\m(v ^2+2gh)= 2E \\ \\ m=\frac{2E}{v ^2+2gh}[/tex]

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