Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 9 - Static Equilibrium; Elasticity and Fracture - Questions: 12


To stand, your center of mass must be closer to your feet.

Work Step by Step

When you rise from a chair, initially your CM s not over your point of contact with the floor (i.e., your feet), which acts as a pivot point. Your weight exerts a torque about that point that tends to rotate you back into a sitting position. Therefore, to stand up, you instinctively first lean forward to move your CM over your feet.
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