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
(a) What is the difference between static friction and sliding friction? For a given pair of objects, which of the two is greater?
(b) How can a very heavy machine be moved conveniently from one place to another in a factory? (No crane is available for this purpose).
(a). Difference between static friction and sliding friction:-
1. Static friction:
This friction occurs when a body rests on the ground. For example, while trekking, the friction between your shoe and the ground helps in climbing the mountain.
2. Sliding friction:
This friction occurs when a body slides on the ground. For example, while writing with a pencil the pencil lead slides on the paper. The friction between lead and the paper is good enough to leave a watermark on the paper.
For a given pair of objects, static friction is always greater than sliding friction.
(b). By placing the round-shaped wood logs under heavy machines and pushing them with hands makes it much easier to move heavy machines from one place to another place in a factory. As wood logs act as roller and rolling friction is much less than static and sliding friction.
Updated on: 10-Oct-2022
94 Views
Advertisements