What is Machines and levers ??

     

Machines 

** The musculoskeletal scheme is a series of easy appliances

** They may balance multiple forces

** Appliances are utilised to conceive a mechanical benefit

** Enhance the range of shift or the speed of movement.

** Enhance force therefore decreasing the allowance of force required

 

to make.

Levers

** Levers are utilised to alter the resulting main heading of the applied force

**  The lever rotates about the axis as a outcome of a force (from sinew contraction)

** A lever is a rigid  bone that turns about an axis of rotation or fulcrum .

** The force acts against a opposition .

•Designed more for force(2)

1ST Class:F-A-R,Resistance arm and force arm in opposite direction

HUMAN EXAMPLE: Erector spinae neck extension,Triceps.

2ND Class:A-R-F,Resistance arm and force arm in same direction

HUMAN EXAMPLE: Gatroc and soleus.

3RD Class: A-F-R,Resistance arm and force arm in same direction

HUMAN EXAMPLE: Biceps brachii.