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  4. A metallic block of density 5 gm cm-3 and having dimensions 5 cm × 5 cm × 5 cm is weighed in water. Its apparent weight will be

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Q. A metallic block of density 5 gm cm-3 and having dimensions 5 cm × 5 cm × 5 cm is weighed in water. Its apparent weight will be

NTA AbhyasNTA Abhyas 2020

Solution:

Apparent weight $=V \, \left(\rho - \sigma \right)g=l\times b\times h \, \left(5 - 1\right)\times g$
Apparent weight $=5\times 5\times 5\times 4$ Dyne or
Apparent weight $=4\times 5\times 5\times 5 \, gf$
Apparent weight = 500 gf