Question

state three important functions of machine with respect effort , load and mechanical advantage​

Answer 1

Answer:

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

Load: The resistive or opposing force to be overcome by a machine.

Effort: The force applied on the machine to overcome the load.

Mechanical advantage: The ratio of load to effort. MA = L/E

Explanation:

While using a machine to overcome a certain load, if the effort needed is less than the load, the machine has mechanical advantage greater than 1, while if it needs an effort greater than the load, it has mechanical advantage less than 1. A machine has mechanical advantage equal to 1, if the effort needed is equal to the load.

A machine having M.A greater than 1, acts as a force multiplier, while a machine having M.A less than 1, gives gain in speed. The machine having M.A equal to 1, is generally used to change the direction of effort as there is no gain in force or speed.