All Flashcards
For a potential energy well graph, what points represents stable, unstable, and neutral equilibrium?
Stable equilibrium: Local minima (valleys) | Unstable equilibrium: Local maxima (peaks) | Neutral equilibrium: Flat regions
How do you determine the force from a potential energy graph?
- Find the slope of the potential energy curve at the point of interest. 2. Take the negative of that slope: .
How do you calculate the total potential energy of a multiple-object system?
Sum the potential energies of all pairs of interacting objects: U_total = U_12 + U_13 + U_23 + ...
How do you calculate the change in potential energy?
The change in potential energy (ΔU) is equal to the negative work done by conservative forces:
What are the key differences between conservative and non-conservative forces?
Conservative: Work is path-independent, net work in a closed loop is zero, potential energy exists (e.g., gravity). Non-conservative: Work is path-dependent, energy is dissipated (e.g., friction).
Compare and contrast stable and unstable equilibrium points in terms of potential energy.
Stable: Local minimum of potential energy, system returns to equilibrium after disturbance. Unstable: Local maximum of potential energy, system moves away from equilibrium after disturbance.