Question

what are simple machines ? give your own answer briefly 60 words...

Answer 1

Simple machine is a mechanical device that changes the direction or magnitude of a force. In a general they can defined at the simpleast mechanism that use mechanical advantage to multiple force. Usually the term refers to the six classical simple machine which where defined by
Renaissance scientists.

*lever

*wheel and axle

*pulley

*inclined plane

*wedge

*screw

the simple machine uses a singles applied force to do work against a single load force. Ignoring friction losses, the work done on the load is equal to the done by the applied force.

Answer 2

A machine is a device by which we can either overcome a large resistive force or load at same point by applying a small force or effort at a convenient point and in desired direction or by which obtain gain in speed .It makes our work easier