A wooden block of volume thousand centimetre cube is suspended from a spring balance if its weight is 12 newton in it is suspended in water such that half of its volume below the surface of the water the reading on the spring will
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- It weighs 12 N in air. ... 9 - Problem 21 A wooden block of volume 1000 cm3 is. ... Subscribe to Unlock ... It is suspended in water such that half of the block isbelow the surface of water.
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A wooden block of volume 1000cm3is suspended from a spring balance. It weighs 12 N in air. It is suspended in water such that half of the block is below the surface of the water. The reading of the spring balance is ..
Volume of the wooden block=1000cm3 =0.001 m3
Weight=Mg=12N
When half the ball is in water (density of water is 1 kg/m3), it experiences an upthrust due to half weight submerged apart from the weight force.
Immersed volume=500cm3 =0.0005 m3
Upthrust=mass of the water displaced X g= (density of water) X (volume) X (g)
=(1) X (0.0005) X (10)=0.005 N
Net force on the block now is: downward weight - upthrust=12-0.005=11.995N
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