> Q. A dry clean needle of diameter ‘d’ and density $rho$ when carefully placed on the surface of water remains floating. If T is the surface tension of water, then maximum value for the diameter ‘d’ of the needle for enabling it to float will be – LIVE ANSWER TODAY

Q. A dry clean needle of diameter ‘d’ and density $rho$ when carefully placed on the surface of water remains floating. If T is the surface tension of water, then maximum value for the diameter ‘d’ of the needle for enabling it to float will be

In This post you will get answer of Q.
A dry clean needle of diameter ‘d’ and density $rho$ when carefully placed on the surface of water remains floating. If T is the surface tension of water, then maximum value for the diameter ‘d’ of the needle for enabling it to float will be

Solution:

Upward force = weight

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