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Section 4.1 Types of Forces
Table 4.1.1. Identifying Forces
| Gravitation |
weight |
\(W\) |
down (towards object causing gravity) |
| Contact (string) |
tension |
\(T \) |
pull along direction of string |
| Contact (surface) |
normal |
\(N \) |
push into object perpendicular to surface |
| Contact (surface) |
friction |
\(f \) |
parallel to surface opposing the motion |
| Other applied |
horizontal |
\(F_{x} \) |
any force may be resolved into an x-component |
| Other applied |
vertical |
\(F_{y}\) |
and a y-component |
