The total weight of a piece of wood is 6 kg in the floating state in water its 1/3 part remains inside the water on this floating solid what maximum weight is to be put such that the whole of the piece of wood is to be drowned in the water

Options

A. 12 kg
B. 10 kg
C. 14 kg
D. 15 kg

Answer

A

Explanation

upthrust = weight
`rArr` Th. = mg
`rArrv_("in")p_(w)g=mg`
`rArr(V)/(3)p_(w)g=6g" "...(1)`
and `(M+6)g=Vp_(w)g" "...(2)`
form eqution (1) and (2)
(M+6) g= 10 g
`rArr` M= 12 kg