Non-conservative work and mechanical energy (W_nc = ΔE)
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W_nc = ΔE
What each symbol means
| Symbol | What it stands for |
|---|---|
| E | Mechanical energy K+U for chosen conservative U definitions (J) |
| W_nc | Work by non-conservative forces (friction, tension with slip, etc.) (J) |
When to use this
Conservative forces already encoded in U; W_nc is work by forces not represented in potential energy.