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A metal block having an internal cavity weighs 110 gms in air & 80 gms in water. If density of metal is 5.5gm/cm 3 then find volume of cavity
weight of object in water( = (Mass of object) *acceleration of gravity - Mass of an equal volume of water *acceleration of gravity. density of water = 1gm/cc Mw = Ma*g - Mv*g 80*10 = (110-Mv)*10 Mv = 30 gms volume of cavity = 30cm3 -- regards Ramesh
weight of object in water( = (Mass of object) *acceleration of gravity - Mass of an equal volume of water *acceleration of gravity.
density of water = 1gm/cc
Mw = Ma*g - Mv*g
80*10 = (110-Mv)*10
Mv = 30 gms
volume of cavity = 30cm3
--
regards
Ramesh
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