Gravitational Effects on Earth and Space Bodies
Physics ⇒ Earth and Space Physics
Gravitational Effects on Earth and Space Bodies starts at 8 and continues till grade 12.
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See sample questions for grade 12
A 1000 kg satellite is in orbit 7000 km from Earth's center. If Earth's mass is 6 × 10²⁴ kg, calculate the gravitational force acting on the satellite. (G = 6.67 × 10⁻¹¹ N·m²/kg²)
A comet passes close to the Sun and speeds up. Explain why this happens in terms of gravitational effects.
A planet has twice the mass of Earth but the same radius. How does the gravitational acceleration on its surface compare to Earth's?
A satellite orbits Earth at a constant speed. Explain why it does not fall to the ground.
Calculate the gravitational force between two 10 kg masses separated by 2 meters. (Use G = 6.67 × 10⁻¹¹ N·m²/kg²)
Calculate the weight of a 50 kg astronaut on the surface of Mars, where g = 3.7 m/s².
Describe how gravitational interactions lead to the formation of galaxies.
Describe how the gravitational pull of the Moon affects tides on Earth.
Explain why geostationary satellites must orbit above the equator.
Explain why the weight of an object is less on the Moon than on Earth.
If Earth's mass were halved but its radius remained the same, what would happen to the acceleration due to gravity at its surface?
State Newton's Law of Universal Gravitation.
