The additional force required to lift a flat circular disc of radius 5cm from the surface of water with surface tension 8tdyne cm^_1 will be
Answer (1)
10th Sep, 2020
Hello,
Force acting on a circular disc placed on the surface of water is given by, F = Surface tension * circumference of circular disc. (Equation 1)
Here, Surface tension = 8t dyne/cm
Circumference = 2 * pie * radius = 10 * pie
Substituting the value obtained above in equation 1, we get:
F = 8t * 10 * pie = 80t * pie dyne
F = 80t * pie dyne (Answer)
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