Calculate the force and pressure acting across the pelvis and at the feet of a 150-lbm person. model the body using cylinders. assumptions: - neglect external pressures (such as air pressure). - the individual distributes his or her weight equally between two legs. - cross-sectional area of the foot is approximately that of the leg. - cross-sectional area of the pelvis is approximately that of the trunk of the body. state any additional assumptions. in your model, is the pressure higher at the pelvis or at the feet? is this consistent with what you expected?