Force review

Question 1

what are examples of mechanical reaction to force stimuli

Answer 1

acceleration - newton’s 2nd law (F = ma)
deformation - hooke’s law (F = kx)

Question 2

what are examples of biological reaction to force

Answer 2

adaptation, repair, damage, and rupture of tissues

Question 3

explain F = ma

Answer 3

resultant force = mass x acceleration of the CoM of the system

Question 4

explain M = Ia

Answer 4

resultant moment = moment of inertia x angular accerlation of the CoM of the system

Question 5

what does mass equal

Answer 5

objects resistance to linear motion
(more mass = more difficult to accelerate

Question 6

what are the assumptions for 2D problems with no change in the state of motion

Answer 6

sum of forces in the x = 0
sum of forces in the y = 0
sum of moments = 0

Question 7

what does the moment of inertia measure

Answer 7

the amount and distribution of matter in an object

Question 8

what does the moment of inertia equal

Answer 8

resistance of an object to rotational acceleration

Question 9

is the moment of inertia for a rigid body fixed

Answer 9

yes