Biomechanics

Question 1

What is the SI unit for length?

Answer 1

Meters

Question 2

What is the SI unit for mass?

Answer 2

Gram

Question 3

What is weight?

Answer 3

Mass multiplied by gravitational field strength

Question 4

What is the SI unit for weight?

Answer 4

Newtons (N) or kg/m2

Question 5

What is the SI unit for area?

Answer 5

M squared

Question 6

What is the SI unit for volume?

Answer 6

M cubed

Question 7

What is density?

Answer 7

Mass/volume

Question 8

What is the SI unit for density?

Answer 8

G/M3

Question 9

What is the equation for velocity?

Answer 9

Distance/Time

Question 10

WHat is the SI unit for velocity?

Answer 10

M/s

Question 11

What is the equation for acceleration?

Answer 11

A= Velocity/time

Question 12

What is the SI unit for acceleration?

Answer 12

M/s2

Question 13

What is the quation for force?

Answer 13

F=ma

Question 14

Whst id the SI unit for force?

Answer 14

Newtons (N)

Question 15

What is the equaion for pressure?

Answer 15

P=F/M2

Question 16

What is the SI unit for pressure?

Answer 16

Pascals (P)

Question 17

What is Newton’s 1st Law?

Answer 17

Law of inertia: an object at rest will remain in this state unless acted upon by a force

Question 18

What is Newton’s 2nd Law?

Answer 18

The momentum of a body is equal to its velocitymultiplied by its mass

Question 19

What is Neton’s 3rd Law?

Answer 19

Law of action and reaction: every action has its equal and opposite reaction

Question 20

What are hydrostatic structures?

Answer 20

Fluid flled tubes given their structure bt rhe pressure of the walls and the fluid inside them

Question 21

What are examples of hydrostatic structures?

Answer 21

Veins and arteries

Question 22

What is the function of connective tissue?

Answer 22

To allow the musculoskeltal system to function

Question 23

What are the four types of connective tissue?

Answer 23

Bone, cartilage, tendons, ligaments

Question 24

Where are tendons and ligaments found?

Answer 24

At joints and muscle insertions

Question 25

What are the three types of cartilage?

Answer 25

Hyaline, firocartilage, elastic cartilage

Question 26

What are the two main types of bone?

Answer 26

Cortical and trabecular

Question 27

What is biomechanics?

Answer 27

The application of engineering to biology

Question 28

What is stress?

Answer 28

The load placed on a structure

Question 29

What is strain?

Answer 29

How structure is deformed by stress

Question 30

What is Young’s Modulus of Elasticity (E)?

Answer 30

The level of strain that can be tolerated

Question 31

What is torque?

Answer 31

The application of force around a central axis/fulcrum

Question 32

What is a fulcrum?

Answer 32

The point around which a lever moves, according to force applied

Question 33

What is a lever/lever arm?

Answer 33

The distance between a load and fulcrum

Question 34

What will the ratio of lever arms in a system influence?

Answer 34

Output force and velocity of the system

Question 35

What is favoured if the muscle inserts close to the fulcrum?

Answer 35

Speed generation

Question 36

What is favoured if the muscle inserts far from the fulcrum?

Answer 36

Power

Question 37

How do tendons aid generaton of power and strength?

Answer 37

By allowing muscles to insert further from the joints

Question 38

What is the centre of mass?

Answer 38

The point around which mass of an object is evenly distributed

Question 39

What is drag?

Answer 39

The forces, such as air or water, that resist an object in motion

Question 40

What are the two categories of drag?

Answer 40

Frcition and pressure

Question 41

How can drag be minimised?

Answer 41

By functional adaptations such a streamlining, smoothing out the surface by hair removal