Calculate the stiffness of a rubber cable if, when you suspend a 4 kg load on it, it stretches 10 cm.
| June 23, 2021 | education
For a system in equilibrium: Fcont. = Fт.
Fcont. = k * ∆l (spring elongation ∆l = 10 cm = 0.1 m).
Ft. = m * g (load mass m = 4 kg, gravitational acceleration g = 10 m / s ^ 2).
k * ∆l = m * g.
k = m * g / ∆l = 4 * 10 / 0.1 = 400 N / m.
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