A solid rectangular block of iron has length

PHYSICS · Multi-part · CBSE · Physics · Gravitation · Gravitation

Problem

10\,\text{cm}

, breadth

5\,\text{cm}

and height

2\,\text{cm}

. The density of iron is

7.8\,\text{g\,cm}^{-3}

. Take

g = 9.8\,\text{m\,s}^{-2}

. (a) Calculate the volume of the block in

\text{cm}^3

and in

\text{m}^3

. (b) Determine the mass of the block. (c) Find its weight in air. (d) State, with reason, whether the block will float or sink when placed in water.