February 2021
Intermediate to advanced
184 pages
4h 7m
English
To say that a bouncing or thrown ball travels along a parabola, really means that its center of gravity does so. The mass of anybody acts as though concentrated at its center of gravity.
If an irregular shaped object is falling or being thrown through the air, the movement of its center of gravity along a parabola can be timed. As most objects have a tendency to rotate when flying through the air, the object is then drawn pivoting by a fixed amount about the successive positions of the center of gravity along the parabola. For example, with a heavy hammer most of the weight is in the metal head and the center of gravity is therefore close to this end. This would produce successive positions of the ...
Read now
Unlock full access