Work
•
Recognize the difference between the scientific and ordinary definitions of work.
•
Define work by relating it to force and displacement.
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Identify where work is being performed in a variety of situations.
•
Calculate the net work done when many forces are applied to an
object
Energy
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Identify several forms of energy.
•
Calculate kinetic energy for an object.
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Apply the work–kinetic energy theorem to solve problems.
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Distinguish between kinetic and potential energy.
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Classify different types of potential energy.
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Calculate the potential energy associated with an object’s position.
Conservation of Energy
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Identify situations in which conservation of mechanical
energy is valid.
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Recognize the forms that conserved energy can take.
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Solve problems using conservation of mechanical energy
When solving for the height, how are we to find an equation in terms of r to substitute into KE(1/2mv^2) at the bottom of the loop? I understand how to find it for the top of the loop but not for the bottom or what the FBD would look like for the bottom either.
ReplyDeleteJaz Popa
an equation for velocity in terms of r I mean
DeleteJaz Popa
If you have the formula for the top, then the bottom is easy. (Can you help me with finding the top?) The FBD would look like gravity + normal = centripetal force. We know that centripetal acceleration equals v^2/r, so ar=v^2.
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