On the locomotion of Mammals, N. Rashevsky.
Bull. Math Biophys. 10, 11-23, 1948 (pdf)
Motor code. Matlab code for picking a battery voltage and gear ratio given a motor (ie, given k,c and R), a desired angular velocity and a desired power. This is problem 2 for the homework due Thursday Feb 11, 2010.
Dynamics and stability of a rimless spoked wheel: a simple 2D system with
Michael J. Coleman, Dynamical Systems, 2010. (paper emailed to class).
Some primitive samples of animation in Matlab: Particle goes in a circle, box rotates and translates, box rotates and translates using homogeneous transform.
Some stories that cover material that you should be able to understand or think about better because of this class.
Elephants run or walk? (See also the article in J of Exp Bio. Relevant papers are by Heglund and Hutchinson.)
Why don't you walk on your toes? (See also the article by Carrier in J. of Exp. Bio.)
Cost of transport of bees? 4 million miles to a gallon or .5 mg/km. But what is the specific cost of transport? [Sugar has about 3 Cal/gm. The mass of a bee is about 100 mg. So COT = (.5 mg)*(3 Cal/g)*(4000 J/Cal)/ ((100 mg )*(9.8 m/s^2)*(1 km)) = 6. Is that impressive?]
Forces in barefoot running. (See also Lieberman paper in Nature)
Recycling energy of heelstrike. (See also paper in PLOS by Collins & Kuo. Collins is a Cornell grad. The idea behind this is directly related the collisional modeling of walking energetics.)