Two cubes made of the same material and edge length 'a' and '2a'. They are placed in a liquid of density ? such that the larger cube is completely submerged when the smaller cube is placed on top of it and the lower surface of smaller cube is just touching the surface of the liquid. Now, if the smaller cube is heated sucjh that it melts uniformly and very slowly (reducing all dimensions simultaneously) such that the edge reduces at a constant rate ? then the velocity of the larger cube as a function of time will be (asuming molten material evaporates immediately.

Radhika Batra , 10 Years ago

Grade 11