LAWS OF MOTION & FRICTION
│
┌─────────────────┼─────────────────┐
│ │ │
NEWTON'S LAWS FRICTION TYPES APPLICATIONS
│ │ │
┌──────┼──────┐ ┌─────┼──────┐ ┌─────┼──────┐
│ │ │ │ │ │ │ │ │
1st 2nd 3rd Static Kinetic Roll Lift Bank Road
Law Law Law f_s f_k f_r ed
│ │ │ │ │ │ │
Inertia F=ma A-R Self- Fixed Apparent tan θ
dp/dt pair adjust μ_k N weight = $v^{2}$/rg
│ │ │
Momentum Diff 0 to
p=mv bodies μ_s N
│
Impulse
J=F$\Delta t$=$\Delta p$
│
Conservation
m_{1}u_{1}+m_{2}u_{2}
= m_{1}v_{1}+m_{2}v_{2}
Atwood Machine Branch
Atwood Machine
│
┌──┴───┐
m_{1} m_{2}
(>) (<)
│ │
a = (m_{1}-m_{2})g T = 2m_{1}m_{2}g
───────── ────────
m_{1}+m_{2} m_{1}+m_{2}
Centripetal Force Branch
Circular Motion
│
F_c = m$v^{2}$/r
│
┌──┴───────────┐
Level road Banked road
│ │
μmg = m$v^{2}$/r tan θ = $v^{2}$/rg
│
v_max = √(μrg)
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