Solutions

Question-10 : A smooth Land.....

Suppose your mass is 60 kg and you are standing on a tree branch that is at a height of 15 m from the ground. To land softly, you’ll have to bend your legs, such that your center of mass descends by ∆h. What is the minimum value of ∆h so that you can land safely without breaking your tibia. Here, Take g = 10 m/s^2 , Cross Section of tibia ≈ 3.2 cm^2 , Max compressing force required to break the tibia in lower leg ≈ 1.6 × 10^8 N/m^2