A body weighing 18N is suspended from a spring 13 cm long. will find the stiffness of the spring if its length is 16 cm
| December 7, 2020 | education
A body weighing 18N is suspended from a spring 13 cm long. will find the stiffness of the spring if its length is 16 cm under the influence of the body weight.
Two forces act on the body: gravity and elasticity.
According to Newton’s third law, Fcont = Ftyl = 18N.
Find the coefficient of elasticity k:
Fpr = kx, where x is the change in the length of the spring, x = 16-13 = 3cm.
k = Fcont / x = 6 N / cm = 0.06 N / m.
Answer: 0.06 N / m.
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