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

Options

A. `0.07` N
B. `0.06` N
C. `0.01 `N
D. `0.02`N

Answer

D

Explanation

Net force on stick ` = F_(1) - F_(2) = (T_(1) - T_(2))l`
` = (0.07 - 0.06)l`
` = 0.01 xx 2 = 0.02 ` N