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Question

Two different bodies are completely immersed in water and undergo the same loss in weight.It is necessary that their weights in air should be the same ? Explain.


Solution

No, it is not necessary that their weights in air should . also be the same. This is because the two bodies have undergone the same toss in weight on completely immersing in water due to their equal volumes, not due to their equal weights. So, they may have different weights in air.

T h e space l o s s space i n space w e i g h t space o f space a n space o b j e c t space w h e n space i m e m r s e d space i n space w a t e r space d e p e n d s space o n space i t s space v o l u m e. T h u s comma t w o space o b j e c t s space w i t h space e q u a l space v o l u m e s space h a v e space t h e space s a m e space l o s s space o f space w e i g h t. B u t space t h e i r space o w n space w e i g h t s space d e p e n d space o n space t h e i r space d e n s i t i e s. I n space c a s e comma t h e i r space d e n s i t i e s space a r e space d i f f e r e n t comma t h e i r space w e i g h t s space i n space a i r space w i l l space b e space d i f f e r e n t. F o r space e x a m p l e comma space c o r k space b a l l space a n d space a space s t e e l space b a l l space o f space t h e space s a m e space s i z e space u n d e r g o space t h e space s a m e space l o s s space i n space w e i g h t space i n space w a t e r space b u t space t h e s e space t w o space h a v e space d i f f e r e n t s space w e i g h t s space i n space a i r. space

Physics
Science for Ninth Class - Part I - Physics
Standard IX

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