HARD
NEET
IMPORTANT
Earn 100

Weight of a body decreases by 1.5%, when it is raised to a height h above the surface of earth. When the same body is taken to same depth h in a mine, its weight will show

61.54% studentsanswered this correctly

Important Questions on Gravitation

MEDIUM
NEET
IMPORTANT
Let escape velocity of a body kept at surface of a planet is u. If it is projected at a speed of 200% more than the escape speed, then its speed in interstellar space will be
MEDIUM
NEET
IMPORTANT
An artificial satellite is moving around earth in a circular orbit with speed equal to one fourth the escape speed of a body from the surface of earth. The height of satellite above earth's surface is ( R is radius of earth)
MEDIUM
NEET
IMPORTANT
A satellite of mass 200 kg revolves around a planet of mass 5×1030 kg in a circular orbit of radius 6.6×106 m. Binding energy of the satellite is
MEDIUM
NEET
IMPORTANT
Escape velocity of an atmospheric particle which is 1000 km above the earth's surface, is (radius of earth is 6400 km and g=9.8 ms-2)
MEDIUM
NEET
IMPORTANT
The ratio of kinetic energy required to be given to the satellite to escape from earth's surface to the kinetic energy required to be given to the same satellite to revolve around the earth in an orbit just above earth's surface, is
MEDIUM
NEET
IMPORTANT
A satellite is revolving around earth in a circular orbit at a uniform speed v. If gravitational force suddenly disappears, speed of the satellite will be
MEDIUM
NEET
IMPORTANT

Mark the correct statement

(i) Escape velocity does not depend on mass of body

(ii) If total energy of a satellite becomes positive, it escapes from earth

(iii) Orbit of geostationary orbit is called parking orbit

MEDIUM
NEET
IMPORTANT
If escape velocity on the surface of earth is 11.2 km s-1 then the escape velocity from  a planet whose mass is same as that on earth and radius 19 that of earth is