Ditanya gaya #butuh_banget

GAYA PEGAS

Diketahui :
lo = 20 cm = 2×10-¹ m
∆l = 5 cm = 5×10-² m
E = 40 N/m²
A = 1 m²

Ditanyakan :
Gaya = ...?

jawab :
E = σ / e
E = F/A / ∆l/lo
E = F × lo / A × ∆l
40 = F × 2×10-¹ / 1 × 5×10-²
F × 2×10-¹ = 40×1×5×10-²
F = 200×10-² / 2×10-¹
F = 2 / 2×10-¹
F = 10 Newton