A person has a height of 1.8 m and mass of 80 kg. Using the table supplied below. (5 marks)

a. Find the location of the centre of mass in the forearm from the proximal joint.

b. Find the mass of the head, trunk and pelvis without the limbs.

c. Find the mass of one entire lower limb excluding the pelvis.

d. Find the mass and location of the centre of mass of the head and neck

Centre of Mass (COM) Length of Mass of Radius of Gyration Segment Length Body Segments Segment Segment Segment Length (Measured from proximal Body Height Body Mass (Measured about COM) end) 0.152 (length) Foot 0.055 (width) 0.014 0.429 0.475 0.039 (height) Shank 0.246 0.045 0.433 0.302 Shank and Foot 0.285 0.0595 0.434 0.416 Thigh 0.245 0.096 0.433 0.323 Entire lower extremity 0.530 0.157 0.434 0.326 (including pelvis) Upper arm 0. 186 0.0265 0.436 0.322 Forearm 0.146 0.0155 0.430 0.303 Hand 0. 108 0.006 0.506 0.297 Forearm and hand 0.254 0.0215 0.677* 0.468 Entire upper extremity 0.441 0.0485 0.512 0.368 Head, trunk and pelvis 0.52 0.565 0.604 (from top of head) 0.503 minus limbs Head and Neck 0.182 0.079 0.55 0.495