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mechanics (acceleration (curve = variable (use differentiation), rate of…
mechanics
acceleration
rate of change of velocity
straight line acceleration is constant
area under graph is the displacement
curve = variable
use differentiation
gravity modelled as acceleration
forces
stay same unless uneven force
resultant force
f=ma
resolve perpendicular and parallel to slope
Fmax= &R
moments
force is perpendicular
sum of moments = resultant moment
consider uniform/ not
about to tilt= all other rigid bodies reaction force = 0
projectiles
(horizontal) constant velocity a=0
(vertical) constant acceleration a=g
horizontal component of initial velocity U is Ucos(a)
vertical component of of initial velocity U is Usin(a)
modelling
limitations
forces as arrows in direction
kinematics
use vectors in suvats
can differentiate/intergrate vectors by doing each component