Momentum and CollisionHard
Question
A thin metal disc of radius r floats on water surface and bends the water surface downwards along the perimeter making an angle q with vertical edge of the disc. In equilibrium, the disc displaces a weight of water W and surface tension of water is T. Choose the correct option(s)
Options
A.Vertical force due to surface tension on the disc is 2πrT cos θ
B.Weight of disc is (W + 2πrT sin θ)
C.Net horizontal force due to surface tension on the disc is zero.
D.Force of bouyancy is W on the disc.
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