Module 1 2 3

Question 1

Force

Answer 1

Single force vector representing the NET effect of
all other vectors.

Question 2

COM

Answer 2

Reducing the distributed mass of a body to a
single point that represents the entire body or
point about which a body’s mass is equally
distributed

Question 3

moment arm

Answer 3

perpendicular distance from the axis of rotation (or pivot point) to the line of action of the applied force. It is a key factor in determining the torque produced by a force

If doing bicep curls the moment arm is the largest at 90 degrees position, no tension when the arm is fully straight (lever arm is the longest)

SI (NM)

Question 4

Net Moment

Answer 4

m1(weight of arms and resistance)+m2 (muscle force)=0= static position

Question 5

Equilibrium

Answer 5

Body at rest, forces and moments are balance either in constant angular or linear velocity

Question 6

COP

Answer 6

Average location of all forces acting on a surface SI (m)

Question 7

Load

Answer 7

Externally applied force

Question 8

Deformation

Answer 8

Change in shape of a body when a lot is applied

Question 9

Stress

Answer 9

Resistance developed by tissue when externally loaded (SI= Pa), Force over Area

Question 10

Pressure

Answer 10

Total applied force divided by total area over which the force was applied (is = Pa)

Question 11

Normalized Load

Answer 11

Load (N)/ Body Mass (KG)

Question 12

Strain

Answer 12

Change in length/Original Length, deformation resulting from stress

Question 13

Stiffness

Answer 13

ex- Bone, have a steep slopped load deformation curve, meaning that its able to resist high forces(bending/compression) before being affected by the load deformation curve

Question 14

Elastic Modulus

Answer 14

is a measure of a material’s ability to resist deformation when a force is applied

Question 15

Hysteresis

Answer 15

Energy lost during loading and unloading cycle, occurs in viscoelastic materials