Can you guys please answer this question

Example 1 5.10 A swinging leg as a pendulum A student in a biomechanics lab measures the length of her leg, from hip to heel, to be 0.90 In. What is the frequency of the pendulum motion of the student's leg? What is the period? PREPARE We can model a human leg reasonably well as a rod of uniform cross section, pivoted at one end (the hip) to form a physical pendulum. For smallangle oscillations it will undergo SHM. The center of gravity of a uniform leg is at the midpoint, so I = L/2. SOLVE Recall from Chapter 7|E' that the moment of inertia of a rod pivoted about one end is 1 I = ML2. Consequently, the pendulum frequency is 3 1 {Mgz 1 Mg (L12) 1 3g = = = = . H f 22': 1 271V ML2/3 27: 2L 064 z The corresponding period is T = llf = 1.6 3. Notice that we didn't need to know the mass