Mechanisms (Junior Cert Engineering): Flashcards

Input motion & force to output motion & force

Linear, rotary, reciprocating, oscillating

Fulcrum

$\frac{\text{load}}{\text{effort}}$

$\text{force} \times \text{distance from fulcrum}$

Between load and effort

Between effort and fulcrum

Between load and fulcrum

Connected levers

$\frac{\text{Motor speed} \times \text{Motor dia}}{\text{Driven dia}}$

$\frac{\text{Driver speed} \times \text{Driver teeth}}{\text{Driven teeth}}$

$\frac{\text{teeth on driven}}{\text{teeth on driver}}$

Rotary motion into reciprocating motion

Rotation in one direction only

Separates surfaces & reduces friction