Question

calculate the force required to pull away horizontal circular loop of wire of radius 0.02m from the surface of water. The surface tension of water is 0.07N/m.​

Answer 1

Answer:

20p Pascal

Explanation:

20 pascal of water 0.07 n/m

Answer 2

Surface tension of water = T = 0.07 N/m

For a circular plate the force required is F = 2 π R  * T

  as the interface between the water, plate and air is a circle of radius R.

F = 2 * π * 0.02* 0.07 Newtons

  = 0.00879645943 Netwons

  = 879.645943 dynes

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