preamble
- Finish Previous Lecture...
- MS#6 is next class
Key Points
| Area | Force | Potential Energy |
|---|---|---|
| Gravity | $$ \mathbf F_j = { m_j } \color{fuchsia} { G \sum { m_i \over r_{ij}^2 } } {\hat r_{ij} } $$ | $$ U_j = { m_j } G \sum { m_i \over r_{ij} } $$ |
| Gravity on Earth | $$ \mathbf F_j = { m_j } \,\, \color{fuchsia} { g }\, $$ | $$ \Delta U_j = { m_j } \color{fuchsia} { g } \, \Delta r_{j} $$ |
| Electric | $$ \mathbf F_j = { q_j} \color{fuchsia} { K \sum { q_i \over r_{ij}^2 } } {\hat r_{ij} } $$ | $$ U_j = {q_j} K \sum { q_i \over r_{ij} } $$ |
| $$ \mathbf F_j = { q_j} \, \color{fuchsia} {E} $$ | $$ U_j = { q_j} \, V(r_j) $$ | |
