Examples from Energy

Created by Andrew E Pawl, last modified on Jan 03, 2009 18:49

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Conservation of Energy

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Bungee Jump — Bungee jumps involve elastic and gravitational potential energy.
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Bungee Jumping for the Brave — A more complicated version of the Bungee Jump problem.
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Spring has Sprung — Energy and springs.
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Roller Coaster Diet? — A good roller coaster uses significant turning accelerations to produce large swings in the rider's apparent weight.
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Path Independence — An illustration of the path independence of gravitational work.
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Down the Ramp — Find the acceleration of a ball rolling without slipping on an inclined plane.
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Down the Well — A mass falling while attached to a massive pulley.

Non-Conservative Work

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When 7000 hp Just Isn't Enough — Explore the kinematics of constant power (as opposed to constant force).
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Give it a Kick — A standard example from work and energy.
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Why are you always so negative? — Explore the reason that kinetic friction usually produces negative work.
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Pull Harder! — Examine the work needed to change the radius of rotation of an object rotating in a circle.
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A Walk on the Pond — How far will two children slide after a perfectly inelastic collision?
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Down the Alley — Determine the final speed of a ball that is initially sliding without rotation.

Graviational Potential Energy

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Bungee Jump — Bungee jumps involve elastic and gravitational potential energy.
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Give it a Kick — A standard example from work and energy.
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Bungee Jumping for the Brave — A more complicated version of the Bungee Jump problem.
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Roller Coaster Diet? — A good roller coaster uses significant turning accelerations to produce large swings in the rider's apparent weight.
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Path Independence — An illustration of the path independence of gravitational work.
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Mass on a Vertical Spring — Another case of Simple Harmonic Motion, this time with gravity (near-earth) thrown in.

Elastic Potential Energy

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Bungee Jump — Bungee jumps involve elastic and gravitational potential energy.
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Bungee Jumping for the Brave — A more complicated version of the Bungee Jump problem.
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Spring has Sprung — Energy and springs.

Rotational Kinetic Energy

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Rotating a Space Ship — Changes in Angular Velocity when the Moment of Inertia is changed, but no torque applied.
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Twirling Skater — Changes in Angular Velocity when the Moment of Inertia is changed, but no torque applied.
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Pull Harder! — Examine the work needed to change the radius of rotation of an object rotating in a circle.
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Down the Alley — Determine the final speed of a ball that is initially sliding without rotation.
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Down the Ramp — Find the acceleration of a ball rolling without slipping on an inclined plane.
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Down the Well — A mass falling while attached to a massive pulley.

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