Question

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• A£® $\frac{8H}{{T}_{1}^{2}-{T}_{2}^{2}}$
• B£® $\frac{4H}{{T}_{2}^{2}-{T}_{1}^{2}}$
• C£® $\frac{8H}{{T}_{2}^{2}-{T}_{1}^{2}}$
• D£® $\frac{H}{4{T}_{2}-{T}_{1}^{2}}$

Answer 1

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H=$\frac{1}{2}g£¨\frac{{T}_{1}}{2}£©^{2}$-$\frac{1}{2}g£¨\frac{{T}_{2}}{2}£©^{2}$
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