2. Walking the dog - On your way to class you might have noticed that everyone was walking at more or less the same speed. In this question we will explore the reason for that.
a) First, consider the leg as a physical pendulum, write down an expression for the natural angular frequency of oscillation of a simplified model for the leg pivoted about the hip joint. Express the frequency in terms of g and the dimensions L and d shown below.
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Natural angular frequency of oscillation of a pendulum is discussed. The frequency is modeled by a leg pivot about a hip joint.