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LEVERS. P1 (LEVERS LINKED IN PAIRS (increase degree of movement, change…
LEVERS. P1
LEVERS LINKED IN PAIRS
increase degree of movement
change distance of movement
reach over distance
pushing movement to pulling/turning movement
connecting levers = linkage
foot pushes on pedal --> linked levers cause movement --> linkage mechanism pulls lid open
LEVERS & LINKAGES
number of levers joint = linkage
linkages move bicycle
most basic part of system is lever
input: feet driving pedals
pedal & gears of bicycle = gear system
output: forward movements
SINGLE LEVERS
result = load
point that supports lever = fulcrum
apply pressure = effort
lever - bar/beam rotates around point of support
SINGLE LEVERS & LEVERS LINKED IN PAIRS
mechanisms:
wheel
screw
wedge
diagonal slope
lever
mechanisms - any part that can move
made up of combinations of mechanisms
mechanical systems = machines
WHAT ARE THEY?
single & linked levers change input force into desired output force/movement
essentials are:
effort
load
fulcrum