First slide

Pressure in a fluid-mechanical properties of fluids

Question

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

Moderate

A

$5 \times 5 \times 5 \times 5 g f$
B

$4 \times 4 \times 4 \times 4 g f$
C

$5 \times 4 \times 4 \times 4 g f$
D

$4 \times 5 \times 5 \times 5 gf$

Solution

Apparent weight
$\begin{array}{l} = V (ρ - σ) g = l \times b \times h \times (5 - 1) \times g \\ = 5 \times 5 \times 5 \times 4 \times g Dyne = 4 \times 5 \times 5 \times 5 gf. \end{array}$

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