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A wooden raft of density 600 kg/m3 and mass 120 kg floats in water. How much weight in kg can be put on it to make its volume sink and top surface coincide with water surface? (A) 40 kg (B) 80 kg (C) 100 kg (D) 120 kg?
Verified Answer
A wooden raft of density 600 kg/m3 and mass 120 kg floats in water. Ho...
we know that

weight of water displaced = weight of raft + mass

so,

ρwVg = Mg

here, M = mass of raft + mass = (120+m) kg

thus,

ρw=1000 kg m-3

ρwVg = (120+m).g

m + 120 = ρwV = 1000 x V

so,

m + 120 = 1000 x V
V(volume of water displaced=Volume of raft)=120/600=.2 m3 

m=.2x1000-120

m=80 kg
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A wooden raft of density 600 kg/m3 and mass 120 kg floats in water. How much weight in kg can be put on it to make its volume sink and top surface coincide with water surface? (A) 40 kg (B) 80 kg (C) 100 kg (D) 120 kg?
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A wooden raft of density 600 kg/m3 and mass 120 kg floats in water. How much weight in kg can be put on it to make its volume sink and top surface coincide with water surface? (A) 40 kg (B) 80 kg (C) 100 kg (D) 120 kg? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about A wooden raft of density 600 kg/m3 and mass 120 kg floats in water. How much weight in kg can be put on it to make its volume sink and top surface coincide with water surface? (A) 40 kg (B) 80 kg (C) 100 kg (D) 120 kg? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A wooden raft of density 600 kg/m3 and mass 120 kg floats in water. How much weight in kg can be put on it to make its volume sink and top surface coincide with water surface? (A) 40 kg (B) 80 kg (C) 100 kg (D) 120 kg?.
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