A needle of length 3 cm is floating on the surface of water. Calculate the minimum force needed to lift the needle above the surface of water. Surface tension of water is 0.072 N/m.

A needle of length 3 cm is floating on the surface of water. Calculate

1.	A needle of length 3 cm is floating on the surface of water. Calculate the minimum force needed to lift the needle above the surface of water. Surface tension of water is 0.072 N/m.
Answer» ANSWER :`4.32 XX 10^(-3)N`\