Guest

2 small spheres each having mass of m kg and charge of q coiumb are suspended from a point by insulating thread of l m and negligible mass. if theta is the angle .. show that "q square=4pie e(4mgl square sin square thetatan theta).

2 small spheres each having mass of m kg and charge of q coiumb are suspended from a point by insulating  thread  of l m and negligible mass. if theta is the angle .. show that "q square=4pie e(4mgl square sin square thetatan theta).

Grade:

2 Answers

SAGAR SINGH - IIT DELHI
878 Points
14 years ago

Dear student,

Electric force F=qE sin theta

E=q/4pie epsilon r^2

Gravitational force F =mg*

take components of gravity as well.

Equate the two forces and you will get the desired result.

 

Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.

All the best.

Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..

 

Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

JUST SHASHANK
16 Points
13 years ago

1191_25561_Untitled.jpg

therefore,q(square)=4pie(absylum not)[4mgl(square){sin(square)(theta)}tan(theta).

Think You Can Provide A Better Answer ?

ASK QUESTION

Get your questions answered by the expert for free