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A steel block has a volume of 0.08 m 3 and a density of 7,840 kg/m 3 . What is the force of gravity acting on the block (weight) in water? A) 6,700.56 N B) 6,150.64 N C) 7,600.18 N D) 5,362.56 N
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A steel block has a volume of 0.08 m 3 and a density of 7,840 kg/m 3 . What is the force of gravity acting on the block (weight) in water?

A) 6,700.56 N
B) 6,150.64 N
C) 7,600.18 N
D) 5,362.56 N

User Ldmuniz
by
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1 Answer

5 votes
The answer is A: 5,362.56 N

The weight of block in air will be density times the volume of block(0.08 X 7840 = 627.2kg) and the subtracting the density of water times the volume of block(0.08 X 1000 = 80kg) from this we'll get the weight of block in water (627.2 - 80 = 547.2kg). Now we have to find the answer in Newtons so simply multiply it with 9.8 (547.2 X 9.8 = 5,362.56N).
User Nasaralla
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