Questions
21
Gravitational force of attraction between satellite and Earth provides necessary
Answer: centripetal force
23
According to Newton's law of universal gravitation, any two particles of finite mass attract one another with a force which is
Answer: Directly proportional to the product of their masses and inversely proportional to the square of their distance apart
25
In SI units , value of gravitational constant(G) is
Answer: 6.673 & times; 10-11
26
Gravitational pull of Earth acting on body whether body is in contact with Earth or not, such force is known as
Answer: field force
27
If speed of rotation of earth increases then what would be the value of weight of a body?
Answer: Weight of a body will decreases
28
The value of gravitational acceleration is –
Answer: Increases as height increase from the earth
30
What is the unit of Universal Gravitational Constant in SI unit?
Answer: N-m/Kg2
31
The Earth attracts the moon with a gravitational force of 1020N. The moon attracts the earth with a gravitational force of
Answer: Greater than 1020N
33
A body of mass 1kg is attracted by the earth with a force which is equal to
Answer: 9.8N
35
Newton’s law of gravitation applies to
Answer: All bodies irrespective of their size
36
In case of free fall the gravitational acceleration on a spherical object depends on__
Answer: None of the above
38
If the distance between two masses is doubled, the gravitational attraction between them
Answer: Is reduced to a quarter
39
A satellite of the earth is revolving in a circular orbit with a uniform speed v. If the gravitational force suddenly disappears, the satellite will
Answer: Move with a velocity v, tangentially to the original orbit
40
If there were a smaller gravitational effect, which of the following forces do you think would alter in some respect
Answer: Archimedes uplift
