Question

A cube made of wood having specific gravity `0.4` and side length `a` is floated in a large tanck full of water.

Which action woukd change the depth to which block is submerged? `(gamma_("wood") lt gamma_("water"))`
A. more water is added in the tank
B. atmospheric pressure increases
C. the tank is accelerated upwards
D. A small coin is placed over the cube

Answer 1

Correct Answer - D
`mg = F_(b), a^(2) xx 0.4 rho g = a^(2) h rho g`
`h = (2)/(5)a, m = a ^(3) xx 0.4, F_(net) =a^(2) x rho g`
`T = 2pi sqrt((a^(3) xx 0.4 rho)/(a^(2) rho g)) , T = 2pi sqrt((2a)/(5g))`