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प्रश्न
A piece of iron weighs 44.5 gf in air. If the density of iron is 8.9 × 103, find the weight of iron piece when immersed in water.
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उत्तर
Density of iron = 8.9 × 103 = 8900
Density of water = 1000
Weight of iron when immersed in water is given by
Weight of iron in water = Weight of iron in air × `(1 - "density of water"/"density of iron")`
= `44.5 "gf" xx (1 - 1000/8900)`
= 39.5 kgf
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संबंधित प्रश्न
A body of volume 100 cm3 weighs 5 kgf in air. It is completely immersed in a liquid of density 1.8 × 103 kg m-3. Find:
- The upthrust due to liquid and
- The weight of the body in liquid.
A body weighs W gf in air and W1 gf when it is completely immersed in water. Find: (i) Volume of the body, (ii) Upthrust on the body and (iii) Relative density of the material of the body.
The density of water is :
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A piece of wood of uniform cross section and height 15 cm floats vertically with its height 10 cm in water and 12 cm in spirit. Find the densities of wood and spirit.
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Select the correct option:
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