Jawabanmu

2014-04-05T11:16:25+07:00
Dik :
m = 300 g = 0,3 kg
g = 10 m/s²
Δx = 20 cm = 0,2 m

Dit:
K = ...?

Jwb :

K = F
     Δx

F = m x g
  = 0,3 x 10
  = 3 N


K = F =  3  = 15 N/m
     Δx   0,2 
2014-04-05T11:17:21+07:00
W = m . g Jadi berat = 0,3 (kg) x 10 = 3 N Tetapan gaya = 3/0,2 (m) = 15 N/m