Answer to Question #172469 in Physics for Hyeri

Question

Uniform rectangular marble slab and 4.4 m long and 3.0 m wide. It has a mass of 190 kg. If it is originally lying on the flat ground, how much work is needed to stand it on end?

Answer 1

The center of mass of the slab move from the height $h=0\ m$ to the hight $h=l/2$

$W=mgl/2=190\cdot9.8\cdot4.4/2=4096.4\ (J)$ . Answer