Question

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. 120 kg
B. 200 kg
C. 40 kg
D. 80 kg

Answer 1

`V=(mass)/("density")=(120)/(600)=(1)/(5)`
`(x+120)g=(1)/(5)xx1000xxgimpliesx=80kg`