Walking with a steady cadence is very important for covering long distances efficiently. How we place our feet, and how quickly we walk,also depends on the roughness of the surface we are walking upon and on the slope of the surface: we walk carefully on slippery surfaces,and take smaller steps when hiking up a hill. When we are walking at constant speed in a fixed direction, the horizontal and verticalcomponents of the acceleration of our center of mass must be zero. In addition, the sum of torques about the body's center of mass mustalso be zero. Consider the situation shown in the figure below.XCMXCM XCMALLAXCMXCMWe can model the walking gait of a person as a swing of the front leg and torso about the point where the front foot is planted (shown witha red circle in the figure) and a rotation of the trailing leg about the center of mass (CM) of the person. If each leg of this 78.0 kg person is85.0 cm long and has a mass of 13.1 kg, and 6, = 0,= 20.0°, what is the angular momentum (in kg - m²/s) of each leg about the center ofmass of the person if the sequence of images shown in the figure spans 1.30 s? (Model each leg as a long, thin rod that does not bend atthe knee.)kg - m²/s

The mass of the leg = 13.1 kgThe length of the leg = 85 cmThe center of mass of the leg is…

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