- [Hard]Two particles of mass m and 4m are fixed at a separation d on a frictionless table. At what distance from the lighter mass, along the line joining the...
- [Easy]The universal gravitational constant G is described as a fundamental constant of nature in the study of gravitation. Which statement about G is correc...
- [Medium]Because the Earth rotates about its axis, the measured acceleration due to gravity for a stationary observer changes with latitude. At which location ...
- [Hard]A satellite of mass m revolves around the Earth of mass M in a stable circular orbit of radius r. What is the total mechanical energy of the satellite...
- [Easy]At a point located at a distance of 2R from the centre of a uniform spherical planet of radius R, the gravitational field strength is measured. How do...
- [Easy]An astronaut inside a spacecraft orbiting the Earth at constant speed feels completely weightless, even though Earth's gravity at that altitude is sti...
- [Easy]A television broadcasting satellite must remain fixed above one point on the equator throughout the day. Which condition must this geostationary satel...
- [Hard]A 500 kg payload is carried by rocket from the Earth's surface to a great height where it is effectively free of Earth's gravity. Taking g as 9.8 m/s ...
- [Easy]A newly discovered asteroid orbits the Sun at a mean distance four times that of the Earth from the Sun. How long does this asteroid take to complete ...
- [Easy]According to Kepler's second law, a planet sweeps out equal areas in equal times as it moves around the Sun. Which physical quantity of the planet rem...
- [Medium]At a certain point in space the gravitational potential due to a point mass is found to be negative and increasing in magnitude as one moves closer to...
- [Easy]Two satellites revolve around the Earth in circular orbits whose radii are in the ratio 1 to 4. What is the ratio of their orbital speeds in the same ...
- [Medium]A communication satellite is to orbit the Earth in a circular path close to the surface. Given that the Earth's surface gravity is about 9.8 m/s squar...
- [Hard]The escape velocity from the surface of the Earth is approximately 11.2 km/s. What would the escape velocity be from a planet having the same density ...
- [Medium]An experimental probe is to be launched directly away from a small airless moon of radius 1600 km where the surface gravity is 1.6 m/s squared. What m...
- [Medium]A mining engineer descends to a depth equal to one-fourth of the Earth's radius, assuming the Earth has uniform density throughout its interior. What ...
- [Medium]A planet has twice the mass of Earth and twice its radius. What is the acceleration due to gravity at the surface of this planet compared to Earth's s...
- [Medium]A weather balloon rises to an altitude equal to half the radius of the Earth. What fraction of its ground-level weight does the instrument package ret...
- [Easy]If the distance between two interacting masses is reduced to one-third of its original value while the masses stay fixed, by what factor does the grav...
- [Medium]Two lead spheres each of mass 8 kg are placed so their centres are 20 cm apart on a smooth bench. What is the gravitational force of attraction betwee...
- [Easy]If distance between two masses doubles, gravitational force becomes?...
- [Medium]Satellite in circular orbit near Earth surface speed?...
- [Medium]Total mechanical energy of mass m in circular orbit radius r around M?...
- [Easy]Kepler's third law states T² is proportional to?...
- [Hard]At small height h ≪ R above Earth, g decreases approximately by factor?...
- [Medium]Change in potential energy moving mass m from r₁ to r₂ (r₂ > r₁)?...
- [Medium]Magnitude of binding energy of planet of mass m in circular orbit radius r?...
- [Hard]If orbital radius doubles, period scales by factor?...
- [Medium]For depth d inside Earth (uniform density) g_d ≈ g(1 - d/R). Depth where g halves?...
- [Easy]Why is gravitational potential energy of two attracting masses negative?...
- [Easy]Dimensions of G are?...
- [Easy]Gravitational force between two masses depends on?...
- [Easy]Escape velocity from Earth surface (R, g)?...
- [Medium]Potential at distance r from isolated mass M (zero at infinity)?...
- [Easy]Field strength at distance r from point mass M?...