

InterviewSolution
Saved Bookmarks
1. |
A paper disc of radius R from which a hole of radius r is cut out, is floating in a liquid of surface tension, T. What will be force on the disc due to surface tension? |
Answer» `T=(F)/(L)=(F)/(L)=(F)/(2pi(R+r))thereforeF=2pi(R+r)T` | |