- Applications Of Mechanical Engineering 1 (97.17 KiB) Viewed 34 times
Applications of Mechanical Engineering
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Applications of Mechanical Engineering
Applications of Mechanical Engineering
1) Using the information below, calculate the horizontal position of the center of gravity of the straight leg with and without a cylinder cast (the cast starts at the point between the foot and leg body segments). Length Weight (as % of body weight) Notes Body Segment Thigh 425 mm 10.5% Use table below for COG Leg 410 mm 4.75% Use table below for COG Foot Height = 1.43% 89 mm 1 Assume COG is of the height from 3 the bottom (inferior) surface Assume CoG is at the mid-point Cast 625 mm 3.2% Segment Center of Mass/ Radius of Gyration/ Weight/Total Segment Length Po Segment Length Body Weight Proximal Distal C of G Proximal Distal Density Segment Definition Leg Thigh Femoral condyles/medial malleolus Greater trochanter/femoral condyles 0,0465 M 0.100 M 0.433 0.567 P 0.433 0.567 P 0.302 0.323 0.528 0.643 M 0.540 0.653 M 1.09 1.05 Answeers: Without cast: Xcog 560 mm proximal from the inferior/distal (measured from bottom of foot) With cast: XCoG534 mm proximal from the inferior/distal (measured from bottom of foot)
1) Using the information below, calculate the horizontal position of the center of gravity of the straight leg with and without a cylinder cast (the cast starts at the point between the foot and leg body segments). Length Weight (as % of body weight) Notes Body Segment Thigh 425 mm 10.5% Use table below for COG Leg 410 mm 4.75% Use table below for COG Foot Height = 1.43% 89 mm 1 Assume COG is of the height from 3 the bottom (inferior) surface Assume CoG is at the mid-point Cast 625 mm 3.2% Segment Center of Mass/ Radius of Gyration/ Weight/Total Segment Length Po Segment Length Body Weight Proximal Distal C of G Proximal Distal Density Segment Definition Leg Thigh Femoral condyles/medial malleolus Greater trochanter/femoral condyles 0,0465 M 0.100 M 0.433 0.567 P 0.433 0.567 P 0.302 0.323 0.528 0.643 M 0.540 0.653 M 1.09 1.05 Answeers: Without cast: Xcog 560 mm proximal from the inferior/distal (measured from bottom of foot) With cast: XCoG534 mm proximal from the inferior/distal (measured from bottom of foot)