- #1
Ezio3.1415
- 159
- 1
I was solving a problem from fluid mechanics... But that led me to question my conception abt surface tension...
The problem stated that the max force needed to uphold a needle(ignore its weight)from the water surface is F... The needle is L m long... What is the surface tension?
They found it by T=F/2L
I know how surface tension works... But I fail to grasp this problem... Why do we need force at all to take out the needle?
The problem stated that the max force needed to uphold a needle(ignore its weight)from the water surface is F... The needle is L m long... What is the surface tension?
They found it by T=F/2L
I know how surface tension works... But I fail to grasp this problem... Why do we need force at all to take out the needle?