- 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
In case of negative work the angle between the force and displacement is
$(a).\ 0^{\circ}$
$(b).\ 45^{\circ}$
$(c).\ 90^{\circ}$
$(d).\ 180^{\circ}$
We know the formula for the work done, $W=Fd\cos\theta$
Here, $W\rightarrow$ work done
$d\rightarrow$displacement
$F\rightarrow$Force applied
$\theta$angle between the directions of force applied and displacement
If $\theta=180^{\circ}$, then $\cos\theta=\cos180^{\circ}=-1$
So, work done $W=-Fd$
So, option$(d)$ is correct.
Advertisements