In the question given below, the passage consists of six sentences. The first and sixth sentences are given at the beginning. The middle four sentences have been removed and jumbled up. They are labelled as, P, Q, R, and S. Find out the proper order for the four sentences.
S1: A force of attraction exists between everybody in the universe.
P: Normally, it is very small but when one of the bodies is a planet, like Earth the force is considerable.
Q: It has been investigated by many scientists including Galileo and Newton.
R: Everything on or near the surface of the Earth is attracted by the mass of Earth.
S: This gravitational force depends on the mass of the bodies involved.
S6 : The greater the mass, the greater is the Earth's force of attraction on it. We can call this force of attraction gravity.
The proper sequence should be