T = \\frac {E \\varepsilon W _ {\\mathrm {p}}}{2 (1 - \\mu)}

T = \\frac {E \\varepsilon W _ {\\mathrm {p}}}{4 (1 - \\mu)}

T = \\frac {E \\varepsilon W _ {\\mathrm {p}}}{1 - \\mu}

T = \\frac {E \\varepsilon W _ {\\mathrm {p}}}{8 (1 - \\mu)}