Problem: From what maximum height can a 75 kg person jump w/obreaking the lower leg bone on either leg? Ignore air resistance and assume the CM of the
Efan Halliday
Answered question
2021-04-24
Answer & Explanation
Raheem Donnelly
Skilled2021-04-26Added 75 answers
The maximum force that each leg can withstand before breaking
If there is even landing with both feet, the max force exerted on the body
Finding the landing speed using the work-energy principle, we have
Or
Considering the impulse's positive direction
Or
For the landing we have using the equation of motion ( as force is constant, acceleration is constant)
substituting for t from equation we get
substituting for from equation and simplifying we get
Or
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