Properties Of Solids And Liquids Question 388

Question: A wooden stick 2m long is floating on the surface of water. The surface tension of water 0.07 N/m. By putting soap solution on one side of the sticks the surface tension is reduced to 0.06 N/m. The net force on the stick will be [Pb. PMT 2002]

Options:

A) 0.07 N

B)0.06 N

C) 0.01 N

D) 0.02 N

Show Answer

Answer:

Correct Answer: D

Solution:

Net force on stick$ =F _{1}-F _{2}=(T _{1}-T _{2})l $

$ =(0.07-0.06)l=0.01\times 2=0.02N $



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