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A wooden stick 2m long is floating on th...

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

A

`0.07 N`

B

`0.06 N`

C

`0.01 N`

D

`0.02 N`

Text Solution

Verified by Experts

The correct Answer is:
D
`S = 0.07N//m , S. = 0.06N//m`
Net force on stick `= F_1 - F_2 = (T_1 - T_2)l`
`= (0.07 - 0.06)2 = 0.02 N.`
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