Explain what is meant by the equation:

g = G ×

Where the symbols have their usual meanings?

State whether the following statements are true or false:

(a) A falling stone also attracts the earth.

(b) The force of gravitation between two objects depends on the nature of medium between them.

(c) The value of G on the moon is about one-sixth of the value of G on the earth.

(d) The acceleration due to gravity acting on a freely falling body is directly proportional to the mass of the body.

(e) The weight of an object on the earth is about one-sixth of its weight on the moon.

Fill in the following blanks with suitable words:

(a) The acceleration due to gravity on the moon is about ……..of that one the earth.

(b) In order that the force of gravitational between two bodies may become noticeable and cause motion, one of the bodies must have an extremely large ………..

(c) The weight of an object on the earth is about …………..of its weight on the moon.

(d) The weight of an object on the moon is about ………….of its weight on the earth.

(e) The value of g on the earth is about ………of that on the moon.

(f) If the weight of a body is 6 N on the moon, it will be about …………… on the earth.

What do you mean by the term ‘free fall’?

During a free fall, will heavier objects accelerate more than lighter ones?