Physics

Problem

A solid rectangular block of iron has length

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. (a) Calculate the volume of the block in

\text{cm}^3

and in

\text{m}^3

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

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