What is a geostationary satellite? State two conditions it must satisfy.
Gravitation
Original Khojo Papers practice question — not from a past board paper.
The acceleration due to gravity g is the acceleration a body has under the earth's attraction; it varies with height, depth and latitude and has the unit m s−2. The gravitational constant G is a universal constant that appears in Newton's law, is the same everywhere in the universe, and has the unit N m2 kg−2.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
g depends on the mass and radius of the planet; G does not.
From the same topic and chapter, at a similar level.
What is a geostationary satellite? State two conditions it must satisfy.
Gravitation
A satellite orbits close to the earth's surface. Find its orbital speed. Take g = 9.8 m s−2 and R = 6.4 × 106 m.
Gravitation
Calculate the escape velocity from the surface of the earth, given g = 9.8 m s−2 and R = 6.4 × 106 m.
Gravitation
State Kepler's three laws of planetary motion.
Gravitation
At what height above the earth's surface does the acceleration due to gravity fall to one-fourth of its surface value? Take R = 6,400 km.
Gravitation
For a projectile launched at speed u, at what angle is the horizontal range greatest, and what is that range?
Kinematics