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?
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
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