Supreme Pandey

Energy is defined as the capacity to do work. It can neither be created nor destroyed, but it can be transformed from one form to another.

Simple machines are designed to make human works easier, faster and more comfortable than the traditional days. Following are the ways in which simple machines make our work easier:

• By multiplying our applied effort.
• By increase the rate of doing work.
• By transferring the applied effort from one end to the other end.

Let us just imagine the life of a labour. When there was no wheel-barrow, they would have to carry 7-8 bricks on top of their head which is painful. With the use of wheel barrow,...