The subject has a mass of 80 kg. The mass of the thigh is 14% of the
Question:
The subject has a mass of 80 kg. The mass of the thigh is 14% of the mass of the whole body The CM of the thigh is located 41% longitudinally away from the proximal (i.e. hip) joint The mass of the shank is 4% of the mass of the whole body The CM of the shank is located 45% away from the proximal (i.e. knee) joint * note that these numbers are rounded from de Leva 1996 simply to make math easier Using the data provided below ad find the following for each point in time on the graph page that was provided to you. (1) Plot hip, knee, and ankle position (2) Draw a line from hip to knee (to represent the thigh segment) (3) Draw a line from knee to ankle (to represent the shank segment) (4) Calculate and plot thigh CM location (5) Calculate and plot shank CM location (6) Calculate and plot thigh-shank total CM location
time (s) | hip x (m) | hip y (m) | knee x (m) | knee y (m) | ankle x (m) | ankle y (m) | |
3.00 | 1.44 | 1.00 | 1.62 | 0.65 | 1.74 | 0.25 | |
3.20 | 1.67 | 1.03 | 1.79 | 0.65 | 1.80 | 0.24 | |
3.40 | 1.85 | 1.05 | 1.87 | 0.64 | 1.80 | 0.24 | |
3.60 | 2.04 | 1.03 | 1.98 | 0.63 | 1.82 | 0.25 | |
3.80 | 2.28 | 1.02 | 2.24 | 0.62 | 1.92 | 0.34 | |
4.00 | 2.45 | 1.03 | 2.58 | 0.65 | 2.28 | 0.37 | |
4.20 | 2.64 | 1.05 | 2.81 | 0.69 | 2.82 | 0.28 | |
4.40 | 2.77 | 1.03 | 2.92 | 0.67 | 3.03 | 0.29 | |
University Physics with Modern Physics
ISBN: 978-0321696861
13th edition
Authors: Hugh D. Young, Roger A. Freedman, A. Lewis Ford