Question

A simple machines is able to move a 400 N load a distance of 20 cm when a force of 20 N is moved through a distance of 5.0 m calculate A,the worke input B,the worke output C,the actual mechanical advantage D,the velocity ratio E,the ideal mechanical advantage

Answer 1

Answer:

(a) A machine is a device by which we can either overcome a large resistive force at some point by applying a small force at a convenient point and in a desired direction or by which we can obtain a gain in the speed.

(b) An ideal machine is a machine whose parts are weightless and frictionless so that which there is no dissipation of energy in any manner. Its efficiency is 100%, i.e. the work output is equal to work input.