Scetch on Simon Stevin tombstone
When the object 1N is moving up the inclined level, gains 3x1 joule gravitational energy.
In the same time P is moving down and loses Px5 gravitational energy. Thus 3x1=Px5, and
P=3/5 Newton.
In the same time P is moving down and loses Px5 gravitational energy. Thus 3x1=Px5, and
P=3/5 Newton.
Feynman characterize it as a genius idea to estimate the strength of the force P using the conservation of energy.
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