Term
|
Definition
flat, slanted surface
ex. ramp (multiply force, increase distance) p.119-120, 130 |
|
|
Term
|
Definition
2 incline planes put together; cutting surface moving
ex. axe p.120, 124 |
|
|
Term
|
Definition
incline plane wrapped around a cylinder
-the more threads the longer the incline plane the greater the mechanical advantage p.121 |
|
|
Term
|
Definition
| rigid bar free to move around a fixed point called a fulcrum p.121-123 |
|
|
Term
|
Definition
| multiply force, sometimes changes directions |
|
|
Term
|
Definition
| multiply force, barely changes directions |
|
|
Term
|
Definition
| multiply distance, never changes directions |
|
|
Term
|
Definition
rope or chain wrapped around a,grooved wheel fixed pulley-changing directions
multiple pulley-inc. distance, multiply force p.126-127 |
|
|
Term
|
Definition
two cylinder objects fastened together rotate about common axis
ex. car wheel and axle, door knob p.124-126 |
|
|
Term
|
Definition
| the number of times input force is multiplied by the machine. the distance input force travels is increased p.113 IDEAL - w/o friction ACTUAL - w/ friction p.115 |
|
|
Term
|
Definition
| relationship between input WORK and output WORK % efficiency= output/input x 100. p.114-115 |
|
|
