- [Medium]A satellite revolves in a circular orbit where the radius is 10⁷ m and the acceleration due to gravity is 10 m/s². What is its time period?...
- [Hard]Two masses m and 4m are placed at a distance d apart. At what point on the line joining them will the gravitational field intensity be zero?...
- [Easy]If the value of g at Earth's surface is 10 m/s², what is its value at a depth of R/2 (where R is Earth's radius)?...
- [Medium]The gravitational potential at a point due to Earth is -62.5 MJ/kg. What is the gravitational field intensity at that point if the point is at a dista...
- [Easy]What is the gravitational potential energy of a mass m at a distance r from the center of Earth (mass M)?...
- [Hard]At what height above the Earth's surface will the acceleration due to gravity be half of its value at the surface? (R = radius of Earth)...
- [Easy]An astronaut weighs 600 N on Earth. What will be their weight on the Moon where g_moon = g_earth/6?...
- [Medium]A satellite orbits Earth at a height equal to Earth's radius R. What is the orbital velocity? (g = 10 m/s², R = 6.4 × 10⁶ m)...
- [Easy]The gravitational field intensity at a point is 5 N/kg. What force will a 2 kg mass experience at that point?...
- [Easy]Two masses of 5 kg and 10 kg are separated by a distance of 2 m. What is the gravitational force between them? (G = 6.67 × 10⁻¹¹ N·m²/kg²)...
- [Medium]Gravitational force on a mass inside Earth (uniform density) at distance r < R from center varies as:...
- [Hard]Energy required to move satellite from radius r to 2r (same planet) initially circular is:...
- [Hard]A satellite shifted from radius r to 4r. New period compared to old T is:...
- [Easy]Time period of geostationary satellite is:...
- [Easy]Escape velocity from spherical planet (mass M radius R) is:...
- [Easy]Gravitational potential at surface of Earth (mass M radius R) is:...
- [Medium]Total mechanical energy of satellite of mass m in circular orbit radius r is:...
- [Easy]Gravitational field (intensity) is defined as:...
- [Medium]Kepler's third law states T^2 proportional to:...
- [Medium]Orbital speed of satellite just above Earth's surface (radius R) is approximately:...
- [Easy]Minimum energy to remove mass m from surface of Earth to infinity is:...
- [Easy]Potential energy of two masses m and m separated by r is:...
- [Hard]Escape velocity from a moon of half Earth's radius and quarter its mass is (Earth v_e = v):...
- [Easy]Gravitational force between two masses m1 and m2 separated by r is proportional to:...
- [Medium]Value of g at height h above Earth (R radius) approximately is:...
- [Easy]The height at which the acceleration due to gravity becomes g/9 (where g is surface gravity) in terms of Earth's radius R is:...
- [Medium]A satellite is revolving in a circular orbit at a height h from the earth's surface (radius of earth R, h << R). The minimum increase in its orbital v...