A gymnast does a one - arm handstand. The humerus, which is the upper arm bone between the elbow and the shoulder joint, may be approximated as a 0.30 - m - long cylinder with an outer radius of `1.0xx10^(-2)m` and a hollow inner core with a radius of `4.0xx10^(-3)m`. Excluding the arm, the mass of the gymnast is 63 kg. What is the compressional strain of the humerus ?

Options

A. `4.9xx10^(-4)`
B. `3.5xx10^(-4)`
C. `2.5xx10^(-4)`
D. `6.4xx10^(-4)`

Answer

C