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Fig. 2. Response of the metathoracic leg with a freely rotating body–coxa
joint to an impulsive perturbation. (A) The predicted free response of a leg
based on k and
from dynamic oscillation experiments
(Dudek and Full, 2006). Mass
was assumed to be 0.1 g. (B) The actual response of a representative leg with
a free body–coxa joint and fixed C-Tr-Fe and femur–tibia joints
(blue) compared to the best fit line of the model (red). In all cases, the
position is normalized to the peak displacement. The predicted response
recovers more than 85% within the time it takes for the actual leg to recover
99%.