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Δx = 4 cm = 0,04 m
F = 2 N
Dit: Ep pegas....?
k = F/Δx
k = 2/0,04
k = 50 N/m
,
Ep = 1/2 k Δx²
Ep = 1/2 x 50 x (0,04)²
Ep = 0,04 J