Question

Force applied on a machine while using it to overcome a load is called

• A. effort
• B. input
• C. output
• D. efficiency

Answer 1

The correct option is A

effort

1. The effort is defined as the force which is applied to the machine to counter the load.
2. Effort, load, and fulcrum three combine to form a lever. These three are related to each other as $Effort\times Effortarm=Load\times Loadarm$.
3. The effort arm and load arm are the distance of effort and load from the fulcrum respectively.

The explanation for the wrong options

Input - It is work done on the machine.

Output - It is work done by the machine

Efficiency - Efficiency is the ratio of input and output for the machine.

Hence the correct option is (A) Effort