Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Explain friction as a necessary evil.
The frictional force causes a lot of losses in general upkeep and wear and tear of machinery. Hence it is considered evil.
But almost all crucial tasks cannot be carried out without the presence of friction. Hence, it is considered a necessary evil. eg. if you wear a shoe and there is no friction then you'll fall. But since there is friction it causes wear and tear of your shoes in the long term
Updated on: 10-Oct-2022
105 Views
Advertisements