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.
More Momentum and Collision Questions
The following four wires are made of the same material. Which of these will have the largest. extension when the same te...A thin rod of length ′L′ is lying along the x-axis with its ends at x = 0 and x = L. Its linear density (mas...A body of volume 100 c.c. is immersed completely in water contained in a jar. The weight of water and the jar before imm...In the given figure an impulse J is given to the block of mass m in the downward direction. As a result of the impulse :...A spherical ball is dropped in a long column of viscous liquid. Which of the following graphs represent the variation of...