Calculate the change in length of the upper leg bone (the femur) when a 70.0 kg man supports 62.0 kg of his mass on it, assuming the bone to be equivalent to a uniform rod that is 40.0 cm long and 2.00 cm in radius.

Choose correct answers:

2×10⁻⁵ m

3.1×10⁻² mm

3.1×10⁻⁵ m

2×10⁻² mm