Jawabanmu

Jawaban paling cerdas!
2014-06-03T14:57:50+07:00
A.  \frac{1}{ks}= \frac{1}{k1}+ \frac{1}{k2} \\ =  \frac{1}{400}+  \frac{1}{500} \\  \frac{1}{ks}= \frac{9}{2000} \\ Ks = \frac{2000}{9}
b. w = mg = 1 N
w = k Δx
Δx = w / k
     = 1 ×  \frac{9}{2000}
     = 0,0045 m
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