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Fc = mac
#
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v2
Fc = m
r
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##
Fc f = − Fc = −mac
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Fcf = Fc = m
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Fel = −k ⋅ s
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Fel = −k ⋅ s
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Fel
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ΣF = Fel + P = 0
ks = mg
s=
mg
k
"" ' # #
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/
/
8