Term
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Definition
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Term
| What is usually the reference point? |
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Definition
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Term
| What kind of quantity is velocity? |
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Definition
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Term
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Definition
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Term
| How do we combine vectors? |
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Definition
Parallel in same: add
Parallel in opposite: subtract
Side wind: Distance formula |
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Term
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Definition
| Distance moved per unit of time |
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Term
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Definition
| # of rotations per unit of time |
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Term
| Rotational speed is always ___________ in the same object |
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Definition
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Term
| What is the unit of rotational speed? |
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Definition
| RPM (Revelutions Per Minute) |
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Term
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Definition
| Property of an object to resist a change in rotational states of motion |
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Term
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Definition
| Force applied at some distance to the axis of rotation |
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Term
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Definition
| Distance from the axis of rotation to where the torque is applied |
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Term
| What is the equation for torque? |
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Definition
| Torque = lever arm x force |
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Term
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Definition
| Avarage position of mass in an object |
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Term
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Definition
| Avarage position of wieght |
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Term
| Why are COM and COG practicly the same thing? |
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Definition
| Wieght and mass are directly proportional |
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Term
How do you determine the COG?
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Definition
- Suspend an object from a string and draw a vertical line downward from the point of suspension
- Suspend the object from another point and repeat
- The COG is where the two lines intersect
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Term
| How can the COG be at a point where no mass exists? |
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Definition
With a donut or ring shape
[image] |
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Term
| What makes an object more stable? |
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Definition
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Term
| What is the equation for angular momentum? |
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Definition
Angular mom = mvr
m=mass
v=velocity
r=radial distance |
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Term
| What is the Law of Conservation of Angular Momentum? |
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Definition
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Term
| Why does a spinning figure skater speed up when bringing his/her arms in? |
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Definition
AM=mvr
Bringing arms in shortens radial distance, since mass cant change, and AM is conserved, velocity increases |
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