Keeps the Moon around the Earth. Causes tides.
Causes rainfall. Keeps us on the Earth's surface. Important Formulae Formula Use (F=\frac{Gm_1m_2}{r^2}) Gravitational force (W=mg) Weight Acceleration due to gravity (g=9.8m/s^2) (v=u+gt) Velocity (s=ut+\frac12gt^2) Distance Motion equation (v^2=u^2+2gs) Important Viva/Exam Questions 1. Define gravitation. 2. State Newton's Universal Law of Gravitation.
3. What is acceleration due to gravity?
4. Define mass and weight. 5. Differentiate between mass and weight. 6. What is free fall? 7. What is escape velocity? 8. Define an artificial satellite. 9. What are the uses of artificial satellites? 10. What is a geostationary satellite?
One-Mark Important Points g = 9.8 m/s²
G = 6.67 × 10-¹¹ Nm²/kg² Weight = mg Escape velocity = 11.2 km/s SI unit of Mass = kg SI unit of Weight = Newton (N)
SHRIYANSH ACADEMY RAHURI DEMY RAHURI MO-8793095050 Read more