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A raft of wood (density=600kg//m^(3)) of...

A raft of wood (density`=600kg//m^(3))` of mass `120 kg` floats in water. How much weight can be put on the raft to make it just sink?

A

80 kg

B

50 kg

C

60 kg

D

30 kg

Text Solution

Verified by Experts

The correct Answer is:
A
For just sink, `(m_("raft")+m)g==V_("raft")rho_(w)g`
`therefore" "m=V_("raft")rho_(w)-m_("raft")`
`=120/600xx1000-120=80 kg`
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