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Make g the subject of the formula: E = mv2/2 + mgh

Physics

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Answer

g=2E−MV22mhg = \frac{2E - MV^2}{2mh}

Step-by-step solution

3 steps

To make gg the subject of the formula E=MV22+mghE = \frac{MV^2}{2} + mgh:

  1. Subtract MV22\frac{MV^2}{2} from both sides of the equation to isolate the term containing gg.

    E−MV22=mghE - \frac{MV^2}{2} = mgh
  2. To combine the terms on the left side, find a common denominator.

    2E2−MV22=mgh\frac{2E}{2} - \frac{MV^2}{2} = mgh 2E−MV22=mgh\frac{2E - MV^2}{2} = mgh
  3. Divide both sides by mhmh to solve for gg.

    g=2E−MV22mhg = \frac{2E - MV^2}{2mh}
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