Physics

Problem

A solid block of mass

3\,\text{kg}

and volume

1.0\times10^{-4}\,\text{m}^3

rests on the bottom of a tank filled with water. If

\rho_{\text{water}} = 1000\,\text{kg m}^{-3}

and

g = 10\,\text{m s}^{-2}

, determine the force exerted by the tank bottom on the block (normal reaction). a)

31\,\text{N}

20\,\text{N}

29\,\text{N}

30\,\text{N}