Gravitational Force - Practice Test

(A) atmosphere

(B) air

(C) sea

(D) vacuum

(D) vacuum

(A) Weight of a body is different on different planets

(B) Mass of a body on the earth, on the moon and in empty space is the same

(C) Weightlessness of a body occurs when the gravitational forces acting on it is counter-balanced

(D) Weight and mass of a body are equal at sea level on the surface of the earth

(D) Weight and mass of a body are equal at sea level on the surface of the earth

(A) at sea level

(B) at the center of the earth

(C) equator

(D) poles

(B) at the center of the earth

(A) The orbital velocity depends on the mass of the satellite

(B) A minimum velocity of 8 km/s is required by a satellite to orbit quite close to the earth

(C) The period of revolution is large if the radius of its orbit is large

(D) The height of a geostationary satellite is about 36000 km from the earth

(A) The orbital velocity depends on the mass of the satellite

(A) proportional to the r 2

(B) inversely proportional to the r

(C) inversely proportional to the r 2

(D) inversely proportional to the G

(C) inversely proportional to the r 2

Gravitational Force - Study Mode