The spring constant of a helical spring under axial load is given by

\[k=\frac{G d^{4}}{8 N D^{3}}\]

where \(G\) is the shear modulus, \(d\) is the wire diameter, \(D\) is the coil diameter, and \(N\) is the number of turns. Find the spring constant and the weight of a helical spring made of steel for the following data: \(D=0.2 \mathrm{~m}, d=0.005 \mathrm{~m}, N=10\).

Transcribed Image Text:

k 000 ki * E P K3 FIGURE 1.85 A system of springs connected in four different directions.