Find out how centrifugal forces multiplies the weight of objects. Let the little plane swing at changeable speeds such as to raise the weight that is opposite to it. It will be amusing to observe that such a little plane raises the heavy wooden piece.
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Let two balls fall down simultaneous along both slopes
Which is down first?
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Discover the aeroplane of Leonardo da Vinci
see how the wings move as you push the machine
70 cm
Buils a bridge according to the principles of Leonardo da Vinci
3 elementen and 2 end pieces
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