lesson 17
Presentation
•
Physics
•
12th Grade
•
Medium
Standards-aligned
Kevin Correa
Used 8+ times
FREE Resource
13 Slides • 9 Questions
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E.Q.:How does the study of circular motion reveal the fundamental principles of force and motion in everyday phenomena?
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Open Ended
What do you think is circular motion about?
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There is always a force pulling the object toward the center.
It might keep a constant SPEED, but its VELOCITY changes because its DIRECTION changes.
Remember: velocity has direction and speed does not.
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In a satellite's case, the pull is gravity.
Anytime you have a force pulling something toward the center, we call it centripetal force.
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This formula is used for circular motion for engineers designing curves in roads, rocket scientists putting satellites into space, roller coaster designers, and much more!
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EXAMPLE 1.
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Multiple Choice
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Multiple Choice
moving or tending to move toward a center...
centripetal force
centrifugal force
Tangent
Curvature
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Multiple Choice
A 450 kg car travelling at 20 m/s goes around a curve with a radius of 15 m. Determine the centripetal acceleration of the car?
600 m/s/s
26.7 m/s/s
1.3 m/s/s
0.67 m/s/s
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Multiple Choice
The acceleration of an object in uniform circular motion is called center-seeking or ___________ acceleration.
centrifugal
centripetal
circular
orbital
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Multiple Choice
True or False: Fnet = mac is the equation for Newton's Second Law for circular motion
True
False
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Multiple Choice
Which of these is the equation for centripetal acceleration?
F=ma
Fc=ma
W = mg
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Fill in the Blanks
One way to describe the speed of an object moving in a circle is to measure its
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Multiple Choice
True or False: Centrifugal force is not a real force. One only feels pushed going around a corner because one is accelerating relative to their surroundings.
True
False
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