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body of density rho is dropped from hei...

body of density `rho` is dropped from height h into a liquid having density `sigma(sigmagt rho)` .If the body just touches the of the container, then the distance of fallen would be proprotional to (Neglect viscous forces)

A

`(h)/(sigma-rho)`

B

`(h)/(sigma+rho)`

C

`hxx(sigma-rho)`

D

`(hrho)/(sigma-rho)`

Text Solution

Verified by Experts

Bouyabt force `Fprop(sigma-rho)`
`:.` Decleration `prop(sigma-rho)rArra=-k(sigma-rho)`
Now, as initial velocity , `u=sqrt(2gh)`
and final velocity .v=o
Distance fellen by the body ,
`s=(2gh)/(2xxk(sigma-rho))" " [:. s=(u^(2))/(2a)]`
`rArr" " sprop(h)/(sigma-rho)`
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