Q.1.
The height of an object or place above the sea level is known as
Q.2.
The mass of moon is about 0.times that of the earth and its diameter is about 0.times that of earth. The value of G on the moon will be:
Q.3.
A stone is released from the top of a tower of height 19.6 m. Then its final velocity just before touching the ground will be:
Q.4.
Acceleration due to gravity on the surface of a planet is g/5 where g is the value on the earth. When a body is vertically thrown up on the earth, it reaches a maximum height h. If the same body is projected with the same velocity from the surface of planet, maximum height reached by it would be
Q.5.
The weight of any person on the moon is about 1/6 times that on the earth. He can lift a mass ofkg on the earth. What will be the maximum mass, which can be lifted by the same force applied by the person on the moon?
Q.6.
The masses of two planets are in the ratio 1 :Their radii are in the ratio 1 :The acceleration due to gravity on the planets are in the ratio
Q.7.
If the gravitational attraction of the Earth suddenly disappears, which of the following statements will be true?
Q.8.
When a mango falls from a mango tree then
Q.9.
The acceleration due to gravity on the Earth depends upon the
Q.10.
An apple falls from a tree because of gravitational attractionbetween the Earth and the apple. If F1 is the magnitude of force exerted by the Earth on the apple and F2 is the magnitude of force exerted by the apple on the Earth, then
Q.11.
The weight of an object at the centre of the Earth of radius R is
Q.12.
The force of attraction between two unit point masses separated by a unit distance is called
Q.13.
The atmosphere is held to the Earth by
Q.14.
Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them is increased by two times, the value of gravitational force between them will be
Q.15.
The value of quantity G in the law of gravitation
Q.16.
Law of gravitation gives the gravitational force between
Q.17.
In the relation F = GM m/dthe quantity G
Q.18.
A boy is whirling a stone tied to a string in a horizontal circular path. If the string breaks, the stone
Q.19.
The gravitational force between two objects is F. If masses of both objects are halved without changing the distance between them, then the gravitational force would become
Q.20.
The value of acceleration due to gravity