Question

State the Newton’s Universal law of gravitation. 2. How will you express Newton’s Universal law of gravitation mathematically? 3. What do we call the gravitational force between the earth and an object? 4. The earth attracts an apple. Does the apple also attract the earth? If it does, why does the earth not move towards the apple? 5. If the moon attracts the earth, why does the earth not move towards the moon? 6. The earth and the moon are attracted to each other by gravitational force. Does the earth attract the moon with a force that is greater or smaller or the same as the force with which the moon attracts the earth? Why? 7. Gravitational force acts on all objects in proportion to their masses. Why then does a heavy object not fall faster than a light object? 8. A student thought that two bricks tied together would fall faster than a single one under the action of gravity. Do you agree with his hypothesis or not? Comment. 9. If the small and big stones are dropped from the roof of a house simultaneously, they will reach the ground at the same time. Why? 10.How does the force of gravitation between two objects change when the distance between them is reduced to half? 11.What happens to the gravitational force between two objects, if the mass of one object is doubled? 12.What happens to the gravitational force between two objects, if the mass of both objects are doubled?​

Answer 1

Answer:

1) Every particle attract every other particle in universe

2)F=GmMr2, F = G mM r 2

3) Gravitational potential energy

4) yes, because the gravitational pull of earth is much more than the pull of apple

5) because the pull of moon is comparatively less to pull earth towards itself

6) Earth attract moon with greater force/pull

7) In that case both the bodies would have same kinetic energy

8) yes, if both bodies have same momentum

9) No they can never do this (gravity depends on weight)

10) will act more vigorously

11) gravitational pull gets double for lighter body

12) no change because both bodies would have same mass.

Explanation:

hope this helps you