Vreemd om dit te lezen op een wetenschappelijke nieuwsshite :
"Imagine that you are pushing a child on a swing. The friction of the child's weight couples him to the seat of the swing and he swings back to you at a certain rate, which is determined partly by the combined weight of the child and the seat. But if the child suddenly becomes able to hover above the swing instead of being directly connected to it, the overall weight of the swing's seat would become lighter and it would fly back to you at a faster rate,"
Of zouden ze bedoelen dat het massamiddelpunt verschuift ?
Al
met kalkpoten.
