How does the force of attraction between the two bodies depend upon their masses and distance between them? 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.

Force of attraction between two masses separated by distance r is given by Newton law of gravitation where F= Gm1m2  Where G is gravitational force and it is an universal constant.

R2

Gravitational force is directly proportional to the product of the masses of two bodies and inversely proportional to the square of the distance between them.

Bodies thrown from same height fall with same speed irrespective of their mass. This is due to acceleration due to gravity.

g= GM Where M is mass R is radius of the earth R2

This equation shows that acceleration due to gravity depends on mass of the earth and radius of the earth. Henec tow brick tied will not fall faster than single one.