Free body diagrams close free body diagramA simplified drawing of an object or system showing the forces acting on it. The forces are shown acting away from the centre of a box or dot. are used to ...
Subtracting a vector is the same as adding a negative version of the vector (remember that making a vector negative means reversing its direction). \(\left( \begin{array}{l} a\\ b \end{array} \right) ...
IN a paragraph on the last number of Terrestrial Magnetism, in NATURE of March 1, p. 421, I notice the following sentence: “Dr. Lüdeling investigates graphically the phenomenon of the diurnal ...
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