Advertisements
Advertisements
प्रश्न
What is the difference between gravity and gravitation?
Advertisements
उत्तर
Gravity is the force of attraction between the object and the earth whereas gravitation refers to the force of attraction that exists between any two bodies that possess mass.
APPEARS IN
संबंधित प्रश्न
Suppose the gravitational potential due to a small system is k/r2 at a distance r from it. What will be the gravitational field? Can you think of any such system? What happens if there were negative masses?
Explain the following:
People often shake the branches of a tree for getting down its fruits.
A ball is thrown vertically upwards. It goes to a height 20 m and then returns to the ground. Taking acceleration due to gravity g to be 10 ms-2, find: the initial velocity of the ball.
A ball is thrown vertically upwards. It goes to a height 20 m and then returns to the ground. Taking acceleration due to gravity g to be 10 ms-2 , find :
the final velocity of the ball on reaching the ground .
Multiple Choice Question. Select the correct option.
The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:
A ball is thrown up with a speed of 4.9 ms-1.
Calculate the time it takes to reach this height.
At what height above the earth's surface would the value of acceleration due to gravity be half of what it is on the surface? Take the radius of earth to be R.
State Newton's law of gravitation. What is the difference between:
g and G?
Write the answer of the question with reference to laws of gravitation.
Write the value of the universal gravitational constant.
A hollow spherical shell of uniform density exerts what gravitational force on a point mass placed inside it?
