be9337a4-aef3-4e72-a320-e83f506fa7f4 14 Валерий Очков 4 5 decimal

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One problem from the article: About Oscillations in Nonlinear Systems with Elastic Bondshttps://www.mdpi.com/2227-7390/11/8/1765

m 1 kg * :

r 1 m * :

h k PE PE.D m g.e * h r - (* : PE.B l 2 r * (2^h r - (2^- sqrt : L 2 l π r * + 2 r * + (* : ΔL L 2 r * 3 π + (* - : k ΔL 2^2 / * 41 line : PE.D PE.B + 31 line :

k 7 N m / * :

h 2 m * :

h k PE 17.3092 J *

h k PE h diff J m / 2.0275 -

h k PE h diff h diff J m 2^/ 6.4456 -

h.1 k.1 21 mat h k PE h diff h k PE h diff h diff 21 mat h k 21 mat 2 m * 7 N m / * 21 mat roots :

Not OKwith wrong error message

Without units - with pseudo-units

kg 1 :

m 3 :

s 1 :

Preview the system h.1 k.1 21 mat h k PE h diff h k PE h diff h diff 21 mat h k 21 mat 2 m * 7 N m / * 21 mat roots : #

k.1 N m / #

h.1 m #

x y axes x y / - :

m 1 : r 1 : g 9.8066 : 13 mat

h k PE PE.D m g * h r - (* : PE.B l 2 r * (2^h r - (2^- sqrt : L 2 l π r * + 2 r * + (* : ΔL L 2 r * 3 π + (* - : k ΔL 2^2 / * 41 line : PE.D PE.B + 31 line :

PE PE axes 2 1 sys PE axes e 4000 e 10000 - 2 2 mat 3 1 sys PE axes 2.733 4000 2.733 10000 - 2 2 mat 3 1 sys