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| Define equilibrium conceptually and mathetmatically |
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Definition
| A system with no translational or angular acceleration (it is moving and rotating at constant velocity) F upward = F downward F leftward = F rightward |
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Term
| Explain the difference between static and dynamic equilibrium |
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Definition
Static Equilibrium - when all translational and angular velocities are constant and zero
Dynamic Equilibrium - when all translational and angular velocities are constant and nonzero |
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Term
| What are the three useful equations for Torque problems? |
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Definition
Torque = Frsinθ
Torque = Fl
Torqueclockwise = Torquecounterclockwise |
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Term
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Definition
| The kinetic and potential energy of a macroscopic system |
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Term
| What is the formula for kinetic energy? |
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Definition
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Term
| What is the formula for gravitational potential energy? |
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Definition
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Term
| What is the formula for elastic potential energy? |
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Definition
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Term
| What are the three formulas for Work and when do they apply? |
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Definition
W = Fdcosθ (for all forces except friction)
W = ΔK + ΔU + ΔE (no heat)
W = ΔK + ΔU (no friction, no heat) |
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Term
| Explain the difference between conservative and nonconservative forces |
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Definition
| The work done against conservative forces is conserved in potential energy; the work done against nonconservative forces is not conserved |
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Term
| Give four examples of conservative forces |
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Definition
| Gravitational forces, Hooke's law forces, electrical and magnetic field forces |
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Definition
| The rate of energy transfer |
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Term
| What are the three formulas for Power? |
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Definition
P = ΔE / t
P = W/t
P = FvcosΘ |
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