A student is carrying all his books for his Fall semester courses (first year) in his right arm. What does the additional weight do to the combined center of gravity (CoG) of body and books? How will his body most likely respond to this change?
What will be an ideal response?
ANS: The center of gravity (for body and books) will be higher and to the right of S2. Because this new
location of the CoG would bring the line of gravity (LoG) to the right side of his base of support,
he will lean to the left to bring the LoG back to the middle of the base of support (most stable
place). The shift in the CoG is unavoidable. The shift of the LoG is an automatic adaptation but
under some volitional control.
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