A thin metal disc of radius `r` floats on water surface and bends the surface downwards along the perimeter making an angle `theta` with vertical edge of the disc. If the disc displaces a weight of water `W` and surface tension of water is `T`, then the weight of metal disc is :

A thin metal disc of radius ‘r floating on water surface, bends the surface downwards along the perimeter making an angle theta with vertical edge of the disc. If the disc displaces a weight of water W and surface tension of water is T, then the weight of metal disc is

A thin metal disc of radius r floats on water surface and bends the surface downwards along the perimeter making an angle theta with vertical edge of the disc of the disc. If the disc dispplaces a weight of water W and surface tension of water is T , then the weight of metal disc is

A disc of paper of radius R is floating on the surface of water of surface tension T . If r=20 cm and T=0.070N//m , then the force of surface tension on the disc is

A disc of paper of radius R is floating on the surface of water of surface tension T . If r=20 cm and T=0.070N//m , then the force of surface tension on the disc is

A circular disc of radius r is rolling without slipping on a horizontal surface. What is the ratio of the translational KE and rotational KE of disc ?