A needle of 12 cm length is on the surface of water. The extra force required, over its weight, to take it out form the surface of water is (surface tension = 72 dyne cm^(-1))

A needle of 12 cm length is on the surface of water. The extra force r

1.	A needle of 12 cm length is on the surface of water. The extra force required, over its weight, to take it out form the surface of water is (surface tension = 72 dyne cm^(-1))
Answer» 72 N `0.864 N` `0.0173 N` `7.2 N` ANSWER :C