Jawabanmu

2014-05-03T19:32:06+07:00
K=200
F=10 N
ΔX=S=F:k
       = 10 : 200
       =0.05 m
W= F.S
   = 10 . 0.05
   = 0.5  N/m
2014-05-03T19:47:35+07:00
F=kxΔX
ΔX = F/k = 10/200 = 1/20 = 0,05 m
nah usaha itu W = 1/2 . k .  x^{2}
jadi W = 1/2 x 200 x 1/400 = 1/4 J
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