wyznaczalnym
A1=A, A2=2A, E1=E2=E.
P = 1000N,
A = 0.0001 m2 ,
l = 1m ,
E = 2.1 1011Pa.
l
2l
l
A2 , E
A1 , E
P
3
2
y
2
1
S2
S1 1
x
P
1. i S2.
1
2.
3.
4.
l1 = , l2 = .
1 2
,
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.
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ównania fizyczne
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3
1
u
v
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v
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Zapiszemy teraz równania geometryczne
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2
 sprowadza je do postaci:
i
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.
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=
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wynosi
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= = �"
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1.
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3