Question

why does penguin swing from side to side while walking​

Answer 1

Answer:

The answer, according to Timothy Griffin at the University of California, Berkeley, is that the clumsy walk is a way of conserving energy. ... At the end of each swing, when the penguin was for an instant still, the energy of the side to side motion was stored as potential energy.

Answer 2

The waddling motion is analogous to an inverted pendulum swinging rhythmically back and forth, Griffin explained. At the end of each swing, when the penguin is momentarily still, the energy of side-to-side motion is stored as potential energy.

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