\(\def \u#1{\,\mathrm{#1}}\)
\(\def \abs#1{\left|#1\right|}\)
\(\def \ast{*}\)
\(\def \deg{^{\circ}}\)
\(\def \ten#1{\times 10^{#1}}\)
\(\def \redcancel#1{{\color{red}\cancel{#1}}}\)
\(\def \BLUE#1{{\color{blue} #1}}\)
\(\def \RED#1{{\color{red} #1}}\)
\(\def \PURPLE#1{{\color{purple} #1}}\)
\(\def \th#1,#2{#1,\!#2}\)
\(\def \lshift#1#2{\underset{\Leftarrow\atop{#2}}#1}}\)
\(\def \rshift#1#2{\underset{\Rightarrow\atop{#2}}#1}}\)
\(\def \dotspot{{\color{lightgray}{\circ}}}\)
How Things Move
Why Things Move
weight
newton
normal force
tension
- Weight (\(W\)) measured in N
- Normal Force (\(N\)) measured in N
- Tension (\(T\)) measured in N
force diagram
static friction
- Static Friction (\(S\)) measured in N
noncontact
contact forces
mass
weight
- Mass (\(m\)) measured in kg
torque
lever arm vector
newton-meters
- Torque (\(\tau\)) measured in N m
\(\tau=rF\sin\theta\)