A solid iron cuboid of dimensions is gently released in kerosene of density

PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Fluids · Fluids

Problem

A solid iron cuboid of dimensions 10 cm × 4 cm × 2 cm10\,\text{cm}\,\times\,4\,\text{cm}\,\times\,2\,\text{cm} is gently released in kerosene of density 800 kg m−3800\,\text{kg m}^{-3}. Density of iron is 7.8 g cm−37.8\,\text{g cm}^{-3}. Determine: (i) the weight of the cuboid in newtons (ii) the upthrust acting on it in kerosene (iii) whether the cuboid will sink or float and the net downward force, if any

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