A close coiled helical spring has to absorb (60 mathrm{Nm}) of energy when compressed (5 mathrm{~cm}). The
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A close coiled helical spring has to absorb \(60 \mathrm{Nm}\) of energy when compressed \(5 \mathrm{~cm}\). The coil diameter is six times the wire diameter. If there are 18 coils, estimate the diameters of coil and wire and the maximum shear stress. \(G=85,000 \mathrm{~N} / \mathrm{mm}^{2}\).
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