Using our preliminary data from Problem 8.1 above, we were able to land a small grant and have used the money to purchase a force plate. With our improved experimental set-up we can now measure the horizontal (fore-aft) and vertical ground reaction forces during the sit-to-stand motion. Also, our video system remains operational, and we shall continue to record the time history of the angular displacements of the shank, thigh, and trunk.
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(b) By comparing the terms in your equations for
, Mathinline body T_1
, and Mathinline body T_2
derived in part (a) to those derived in Problem 8.1(a), discuss the advantages to being able to accurately estimate the ground reaction forces and relevant kinematic parameters when calculating joint torques. Mathinline body T_3
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