What is tangential velocity?
Open Note Flashcard November 22

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Physics
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Tangential velocity is the linear speed of an object moving along a circular path, measured at a point tangent to the circle. It depends on the radius of the circle and the angular speed.
2.
FLASHCARD QUESTION
Front
Which has a greater tangential velocity: a kid near the center of a merry-go-round or a kid near the outside?
Back
A kid near the outside of the merry-go-round has a greater tangential velocity because they are moving a larger distance in the same amount of time compared to the kid near the center.
3.
FLASHCARD QUESTION
Front
What is the best position to apply force to open a heavy door?
Back
The best position to apply force to open a heavy door is at the edge of the door far from the hinges, as this maximizes the torque applied to the door.
4.
FLASHCARD QUESTION
Front
What happens to a person's moment of inertia when they extend their arms while sitting on a spinning stool?
Back
When a person extends their arms, their moment of inertia increases because the mass is distributed further from the axis of rotation.
5.
FLASHCARD QUESTION
Front
What is the relationship between moment of inertia and angular speed?
Back
The relationship is described by the conservation of angular momentum: if the moment of inertia increases, the angular speed decreases, and vice versa, assuming no external torques act on the system.
6.
FLASHCARD QUESTION
Front
Define angular momentum.
Back
Angular momentum is the quantity of rotation of an object, calculated as the product of its moment of inertia and its angular velocity.
7.
FLASHCARD QUESTION
Front
What is torque?
Back
Torque is a measure of the rotational force applied to an object, calculated as the product of the force and the distance from the pivot point (lever arm).
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