EVERYDAY SCIENCE

Detailed explanation-1: -Gravity as well as electrostatic and magnetic attraction and repulsion provide real life examples of forces being exerted by one object on another without them being in contact with each other. Many children are aware of magnetism and have played with fridge magnets.

Detailed explanation-2: -Both gravitational and the magnetic forces are known as conservative forces. This property relates to work being path independent. That is, it takes the same amount of work to move a mass, in some external gravitational field, from one point to another regardless of the path taken between the two points.

Detailed explanation-3: -Magnetism is the force exerted by magnets when they attract or repel each other. Magnetism is caused by the motion of electric charges. Every substance is made up of tiny units called atoms.

Detailed explanation-4: -Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.