Question

3. What is the source of centripetal force that a planet requires to revolve around the Sun? On what factors
does that force depend?
(HOTS
4. On the earth, a stone is thrown from a height in a direction parallel to the earth's surface while another
stone is simultaneously dropped from the same height. Which stone would reach the ground first and
why?
(HOTS
5. Identical packets are dropped from two aeroplanes, one above the equator and the other above the north
pole, both at height h. Assuming all conditions are identical, will those packets take same time to reach
the surface of earth. Justify your answer.
6. The weight of any person on the moon is about 1/6 times that on the earth. He can lift a mass of 15 kg
on the earth. What will be the maximum mass, which can be lifted by the same force applied by the
on the moon?
1. Calculate the average density of the earth in terms of g, G and R.
(V) LONG ANSWER TYPE QUESTIONS
(HOTS
person
[90 kg] (HOTS
(HOTS​

Answer 1

Answer:

Gravitational force is the is the force of centripetal force required to revolve around the sun.This force depends on the distance between the planet and the sun along with there masses.