Gravitation
Jharkhand Board · Class 9 · Science
All formulas from Gravitation in Jharkhand Board Class 9 Science. Key equations, constants, and identities for board exam preparation.
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Universal Law of Gravitation
F = G × (M × m) / d²
G = 6.674 × 10⁻¹¹ N m² kg⁻²
Free Fall and Acceleration due to Gravity
g = GM / R²
g = 9.8 m/s² ≈ 10 m/s² (for easy calculations)
v = u + gt
s = ut + ½gt²
v² = u² + 2gs
Mass and Weight
W = m × g
W_moon = (1/6) × W_earth
Thrust and Pressure
Pressure (P) = Thrust (F) / Area (A)
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