Which methods can be used to measure the center of mass?

Which methods can be used to measure the center of mass?

• A. MRI imaging only
• B. Blood tests only
• C. Calculations from segmental positions and masses
• D. Temperature measurement

Answer: (C)

The center of mass is the balance point of the body, found by combining how much mass each part has and where that mass is located. In practice, you estimate each body segment’s mass and its center of mass position, then compute the overall center of mass as the mass-weighted average of those positions (CM = Σ(m_i r_i) / Σ m_i). This approach uses segmental positions and masses because it directly reflects how mass is distributed throughout the body. MRI imaging alone doesn’t give you the actual mass distribution needed, and blood tests or temperature measurements don’t inform where mass is located in space. So calculating from segmental positions and masses is the appropriate method.

The center of mass is the balance point of the body, found by combining how much mass each part has and where that mass is located. In practice, you estimate each body segment’s mass and its center of mass position, then compute the overall center of mass as the mass-weighted average of those positions (CM = Σ(m_i r_i) / Σ m_i). This approach uses segmental positions and masses because it directly reflects how mass is distributed throughout the body. MRI imaging alone doesn’t give you the actual mass distribution needed, and blood tests or temperature measurements don’t inform where mass is located in space. So calculating from segmental positions and masses is the appropriate method.