[填空题]
From what maximum height can a 75-kg person jump with6r cuog1ej 1)gfvlq: /out brel d f h a,*d ue)mq:lem,5wu4fr4g.l2vaking the lower leg bone of either leg? Ignore air resistance. fmahuw2 lu )r*dqle,5 g,m :fe4lv4d and assume the CM of the person moves a distance of 0.60 m from the standing to the seated position (that is, in breaking the fall). Assume the breaking strength (force per unit area) of bone is $170\times10^6\mathrm{~N/m^2}$ and its smallest cross-sectional area is $2.5\times10^{-4}m^2$ [Hint: Do not try this experimentally.] m
