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A spring balance reads 10 kg when a buck...

A spring balance reads 10 kg when a bucket of water is suspended from it. What is the reading on the spring balance when (i) an ice cube of mass 1.5 kg is put into the bucket (ii) an iron piece of mass 7.8 kg suspended by another spring is immersed with half its volume inside the water n the bucket. Relative density of iron = 7.8

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SL ARORA-Mechanical Properties of fluids-Exercise
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  4. The force on a Phonograph needle is 1.2 N. the point has a circular cr...

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  5. A cylinderical vessel contaning liquid is closed by a smooth piston of...

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  6. The area of the smaller piston of a hydraulic press is 1cm^2 and that ...

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  7. The average mass that must be lifted by a hydraulic press is 80 "kg".I...

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  8. In a hydraulic press used for compressing cotton the area of the pisto...

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  9. An automobile sack is lifted by a hydraulic jack that consists of two ...

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  10. How much will a body of 70 N weight in water if it displaces 20 ml of...

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  11. A solid weighs 6 kg in air. If its density is 2000 "kg" m^(3) what wil...

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  12. A solid weighs 10 N in air. Its weight decreases by 2 N when weighed i...

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  13. A copper cube of mass 0.50kg is weighed in water. The mass comes out t...

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  14. A solid floats in water with 3//4 of its volume below the surface of w...

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  15. A piece of wood of relative density 0.25floats in a pail containing oi...

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  16. A boat having a length of 3 m and breadth of 2 m is floating on a lake...

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  17. When a body of mass 240 kg is placed on a ice berg floating in sea wat...

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  18. A cubical block of wood 10 cm on a side floats at the interface betwee...

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  19. A Piece of brass (alloy of zinc and copper) weighs 12.9 g in air. When...

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  20. A piece of iron floats in mercury. Given that the density of iron is 7...

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  21. A metal cube of 5cm side and relative density 9 is suspended by thread...

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