GAYA GRAVITASI

▶ Laju, periode, percepatan orbit

h = 300 km

R (jejari bumi) ≈ 6.400 km

r = R + h = 6.700 km = 6,7 × 10⁶ m

M = 5,98 × 10²⁴ kg

G = 6,67 × 10⁻¹¹ Nm²/kg²

v = __ ?

laju orbit

v = √(G M / r)

v = √(6,67 × 10⁻¹¹ × 5,98 × 10²⁴ / (6,7 × 10⁶ m)

gunakan kalkulator

v ≈ 7.715,7 m/s ✔

T = __ ?

periode orbit

T = 2π √(r³ / GM)

T = 2π √((6,7 × 10⁶)³ / (6,67 × 10⁻¹¹ × 5,98 × 10²⁴)

gunakan kalkulator

T ≈ 1,737π × 10³ s ✔

as = __ ?

percepatan sentripetal

as = v² / r

as = (7.715,7)² / (6,7 × 10⁶)

gunakan kalkulator

as ≈ 8,9 m/s² ✔

g = __ ?

percepata gravitasi

g = G M / r²

g = 6,67 × 10⁻¹¹ × 5,98 × 10²⁴ / (6,7 × 10⁶)²

gunakan kalkulator

g = 8,9 m/s² ✔