Week 8/10

Question 1

what is moment of inertia

Answer 1

function of how far away my mass is from my axis of rotation

Question 2

friction?

Answer 2

interaction of forces arisin g from interaction of 2 surfaces

Question 3

frictions acts?

Answer 3

parallel but opposite to motion/pull

Question 4

centripetal force?

Answer 4

is a force thats pulling you in
Caused by an acceleration towards the centre of a circle

Question 5

centrifugal force?

Answer 5

is basically inertia (opposite to centripetal)

Question 6

Slow twitch fibres?

Answer 6

contracts slowly and for longer periods less force

Question 7

fast twitch fibres?

Answer 7

faster for a shorter period of time with more force

Question 8

Slow twitch type 1 example?

Answer 8

Aerobic (endurance)

Question 9

Fast twitch type 2 b example?

Answer 9

anaerobic (short/fast activities)

Question 10

Fast twitch type 2 a example?

Answer 10

Resistant to fatigue
Simliar to slow twitch (weight lifting)

Question 11

Joint reaction force?

Answer 11

Net force acting through the joint/allows us to translate forces from one segment to another

Question 12

JRF vs bone on bone

Answer 12

muscle forces pulling joint together

Question 13

Conservation of Angular momentum?

Answer 13

in an isolated system angular momentum remains constant

Question 14

how do i generate angular momentum?

Answer 14

Turns & Twists

Question 15

Centre of pressure is?

Answer 15

is the origin of the ground reaction force vector