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Terms in this set (15)

Know the formula for work, power, mechanical advantage, and mechanical efficiency.
work = f x d power = w/t , mechanical advantage = Fin/din = F out/d out, mechanical efficiency = w out / w in x 100
2.) Know what units are associated with the formulas for work, power, mechanical advantage, and mechanical efficiency.
Work: Joule (J) = N-m
Power: Watts (W) = J/s
Actual Mechanical Advantage: no unit
Ideal Mechanical Advantage: no unit
Mechanical Efficiency: percent (%)
Energy= Joule
3.) Know the difference between actual mechanical advantage and ideal mechanical advantage.
Actual Mechanical Advantage: Friction is taken into account
Ideal Mechanical Advantage: Friction is NOT taken into account
4.) Be able to manipulate formulas to solve for variables.
A force must move an object a distance. The force applied to the object must be in
the same direction as the motion of the object.
5.) Be able to solve problems using formulas.
The inclined plane family wedge, screw, and inclined plane
The lever family lever, pulley, and wheel and axle
6.) Be able to recognize when work is being done.
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7.) Look over worksheets and labs for practice problems.
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8.) Know the two families of machines and the six simple machines they contain.
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9.) Be able to draw pulley systems.
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10.) Be able to locate the input and output forces and distances in a pulley system.
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11.) Be able to perform calculations for pulleys and inclined planes.
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12.) Be able to explain why the efficiency of a machine decreases when simple machines are added.
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13.) Be able to provide examples for two types and the seven forms of energy.
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14.) Be able to explain the law of conservation of energy.
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15.) Know the difference between series and parallel circuits
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