Physics

Problem

A uniform brick of mass

3\,\text{kg}

has dimensions

30\,\text{cm}

(width)

\times

40\,\text{cm}

(depth)

\times

80\,\text{cm}

(height). It is standing vertically on its

30\,\text{cm} \times 40\,\text{cm}

face. Calculate the minimum work required to tilt the block about its

40\,\text{cm}

edge until it reaches the position of unstable equilibrium (just before falling over to the other side). (Take

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

)