Civil Engineering (CE) Exam > Civil Engineering (CE) Questions > A stone weighs 650 N in air and 275 N in wate...
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A stone weighs 650 N in air and 275 N in water. Compute its specific gravity.
- a)1.73
- b)2.45
- c)3.46
- d)0.865
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A stone weighs 650 N in air and 275 N in water. Compute its specific g...
Explanation: Weight of water displaced=Weight of stone in air – Weight of stone in water
=375
Volume of water displaced=Volume of stone=375/9.81*1000=0.038 m3
Density of stone= mass/volume=650/9.81*0.038=1733 kg/m3
specific gravity= Density of stone/Density of water=1.73.
=375
Volume of water displaced=Volume of stone=375/9.81*1000=0.038 m3
Density of stone= mass/volume=650/9.81*0.038=1733 kg/m3
specific gravity= Density of stone/Density of water=1.73.
Most Upvoted Answer
A stone weighs 650 N in air and 275 N in water. Compute its specific g...
Given information:
Weight of stone in air = 650 N
Weight of stone in water = 275 N
Calculation:
Specific gravity of a substance is defined as the ratio of the density of the substance to the density of water at a specified temperature.
Let,
Weight of stone in air = W1 = 650 N
Weight of stone in water = W2 = 275 N
Density of water = ρw = 1000 kg/m³
Specific gravity of stone = SG = ρs/ρw
Buoyancy force experienced by the stone when immersed in water is given as:
Buoyancy force = weight of water displaced by the stone
= W1 - W2 = 650 - 275 = 375 N
Weight of water displaced by the stone is given as:
Weight of water displaced = Buoyancy force = 375 N
Volume of water displaced by the stone is given as:
Volume of water displaced = Weight of water displaced/Density of water
= 375/1000 = 0.375 m³
Volume of the stone is given as:
Volume of stone = Volume of water displaced
= 0.375 m³
Density of the stone is given as:
Density of stone = Weight of stone/Volume of stone
= W1/Volume of stone
= 650/0.375
= 1733.33 kg/m³
Specific gravity of the stone is given as:
SG = Density of stone/Density of water
= 1733.33/1000
= 1.733
Therefore, the specific gravity of the stone is 1.733 or 1.73 (approx).
Hence, the correct option is (a) 1.73.
Weight of stone in air = 650 N
Weight of stone in water = 275 N
Calculation:
Specific gravity of a substance is defined as the ratio of the density of the substance to the density of water at a specified temperature.
Let,
Weight of stone in air = W1 = 650 N
Weight of stone in water = W2 = 275 N
Density of water = ρw = 1000 kg/m³
Specific gravity of stone = SG = ρs/ρw
Buoyancy force experienced by the stone when immersed in water is given as:
Buoyancy force = weight of water displaced by the stone
= W1 - W2 = 650 - 275 = 375 N
Weight of water displaced by the stone is given as:
Weight of water displaced = Buoyancy force = 375 N
Volume of water displaced by the stone is given as:
Volume of water displaced = Weight of water displaced/Density of water
= 375/1000 = 0.375 m³
Volume of the stone is given as:
Volume of stone = Volume of water displaced
= 0.375 m³
Density of the stone is given as:
Density of stone = Weight of stone/Volume of stone
= W1/Volume of stone
= 650/0.375
= 1733.33 kg/m³
Specific gravity of the stone is given as:
SG = Density of stone/Density of water
= 1733.33/1000
= 1.733
Therefore, the specific gravity of the stone is 1.733 or 1.73 (approx).
Hence, the correct option is (a) 1.73.
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A stone weighs 650 N in air and 275 N in water. Compute its specific gravity.a)1.73b)2.45c)3.46d)0.865Correct answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A stone weighs 650 N in air and 275 N in water. Compute its specific gravity.a)1.73b)2.45c)3.46d)0.865Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A stone weighs 650 N in air and 275 N in water. Compute its specific gravity.a)1.73b)2.45c)3.46d)0.865Correct answer is option 'A'. Can you explain this answer?.
A stone weighs 650 N in air and 275 N in water. Compute its specific gravity.a)1.73b)2.45c)3.46d)0.865Correct answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A stone weighs 650 N in air and 275 N in water. Compute its specific gravity.a)1.73b)2.45c)3.46d)0.865Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A stone weighs 650 N in air and 275 N in water. Compute its specific gravity.a)1.73b)2.45c)3.46d)0.865Correct answer is option 'A'. Can you explain this answer?.
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