Levers

Question 1

levers

Answer 1

-allows to gain mechanical advantage
-lever (long bone/ axis (joint)
-force (muscle pulling a tendon
-resistance (attempting to move)
-torque: movement = force X moment arm (distance from applied force to the axis)

Question 2

1st class lever

Answer 2

-resistance=force arm (adv. force or speed)
-short force arm/long resistance
>ROM to overcome resistance
-force arm longer than resistance <ROM

Question 3

2nd class lever

Answer 3

-resistance<force arm (adv force at the expense of ROM or speed
-lift more weight but cant go far
-resistance is COG
-<ROM or speed a resistance
-less force

Question 4

3rd class lever

Answer 4

-resistance > force arm (adv speed or ROM at the expense of force
-swinging a bat
->ROM & speed
-High force (generate more force than an actual resistance)
-muscles insert close to the joint

Question 5

angle of attachment

Answer 5

-rotary (stabilizing/distracting force)
-(ROM)(COMPRESS)(PULL JOINT APART)
-closer to 90 degrees (largely rotary component)