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What is potential energy?

Stored energy within a system due to the positions of its components.

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What is potential energy?

Stored energy within a system due to the positions of its components.

What is a conservative force?

A force where the work done is independent of the path taken.

What is a non-conservative force?

A force that dissipates energy as heat and does not have an associated potential energy.

What is stable equilibrium?

A state where, if you nudge the system, it returns to its original position; corresponds to a local minimum on the potential energy curve.

What is unstable equilibrium?

A state where, if you nudge the system, it moves away from its original position; corresponds to a local maximum on the potential energy curve.

Define gravitational potential energy near Earth's surface.

The potential energy an object has due to its height above a reference point, given by the formula: ΔUg=mgΔy\Delta U_{g} = mg\Delta y

What is potential energy?

Stored energy within a system due to the positions of objects.

What are conservative forces?

Forces that allow a system to store energy; work done is path-independent.

What are non-conservative forces?

Forces that dissipate energy as heat, preventing the system from storing potential energy.

What is the spring constant (k)?

A measure of the stiffness of a spring.

What is gravitational field (g)?

The acceleration due to gravity, approximately 9.8 m/s² on Earth.

Define displacement (Δx) in the context of springs.

The distance a spring is stretched or compressed from its equilibrium length.

What are the key differences between conservative and non-conservative forces?

Conservative Forces: Work done is path-independent, net work in a closed loop is zero, potential energy can be defined. Non-Conservative Forces: Work done is path-dependent, net work in a closed loop is non-zero, potential energy cannot be defined.

Compare gravitational potential energy near Earth's surface and for point masses.

Near Earth's Surface: DeltaUg=mgΔyDelta U_{g} = mg\Delta y, valid for small changes in height. Point Masses: Ug=Gm1m2rU_{g} = -G \frac{m_{1}m_{2}}{r}, valid for any separation distance, uses a zero point at infinite separation.

Differentiate between stable and unstable equilibrium points on a potential energy curve.

Stable Equilibrium: Local minimum, system returns to equilibrium after a small disturbance, concave up. Unstable Equilibrium: Local maximum, system moves away from equilibrium after a small disturbance, concave down.