Question

ans pls any one only ​

Answer 1

Answer:

1. no
2. Newton's law of universal gravitation states that every point mass in the universe attracts every other point mass with a force that is directly proportional to the product of their masses, and inversely proportional to the square of the distance between them.
3. Due to which the radius of the earth is smaller at poles and is larger at equator. Since g is directly proportional to 1/R2. therefore the acceleration due to gravity is smaller at equator than that at poles. No, the value of g is different at different places on the surface of earth.
4. 400n
5. A sheet of paper falls slower then the one crumpled into a ball because the surface area of the ball is much lower than that of the sheet. Thus the upward force exerted by air on the sheet is much as compared to the one exerted on the ball. Hence the sheet falls slower.

Answer 2

Explanation:

1) mass of the body cannot be zero.

2)The universal law of gravitation successfully explained several phenomena which were believed to be unconnected: the force that binds us to the earth; the motion of the moon around the earth; the motion of planets around the Sun.

3) The value of g at all place is not the same, it varies. The value of g is more at the poles and less at the equator. Hence on the basis of altitude the value of g changes.

4)

5) A sheet of paper falls slower then the one crumpled into a ball because the surface area of the ball is much lower than that of the sheet. Thus the upward force exerted by air on the sheet is much as compared to the one exerted on the ball. Hence the sheet falls slower.