defining torque

Question 1

what is torque

Question 2

Identify the factors that determine the effect a torque will have.

Question 3

Identify the various types of levers found in the human body and purpose.

Question 4

What type of force produces both translation and rotation?

Question 5

Identify the factors that influence the size of the torque?

Question 6

Define the term mechanical advantage? What does the mechanical advantage tell you about a system?

Question 7

what are the three types of levers and example of each

Answer 7

First class lever - effort - fulcrum - resistance (seesaw)
Second class lever - fulcrum - resistance - (force wheelbarrow)
Third class lever - fulcrum - effort - load (speed lever bicep)

Question 8

centre of gravity

Answer 8

point where weight is equally distributed

Question 9

centric force

Answer 9

act directly through centre

Question 10

eccentric force

Answer 10

act off centre, to cause rotation

Question 11

couple

Answer 11

pair of forces equal in distance from centre of mass acting in opposite directions cause object to rotate without translation (pure moment)

Question 12

pure moment

Answer 12

type of force causes rotation with no translation (a couple)

Question 13

moment arm

Answer 13

perpendicular distance between line of action of force and pivot point

Question 14

resistance arm

Answer 14

distance from axis of rotation to where effort applied