mass vs. weight - jersey superb replica -...
TRANSCRIPT
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Mass vs. WeightAlso, some review questions for the assessment
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On an airport runway, the motor of an airplane exerts a force of
4x105N Westward and friction with the ground exerts a force of
5x104N Eastward. If the plane accelerates at a rate of 0.5 m/s2,
what is its mass?
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Announcements
• HW3 solutions will be posted after 7th
• HW4 is due Friday. Answer key is posted - strongly recommend you complete this by tomorrow though, as one of the things you do to study (in addition to going through notes/powerpoints)
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Mass vs. WeightAren’t they the same thing?
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Mass vs. Force of Gravity
Aren’t they the same thing?
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Mass Weight
Units: Kilograms [kg] Units: Newtons [N]
Scalar (only magnitude) Vector (magnitude and direction)
Intrinsic property (regardless of where you
are)
Extrinsic property (depends on gravitational
field around you)
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Is it possible to lose weight, but not mass?
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Review Problems
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588N
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588N
97.2N
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588N
97.2N
8.83 m/s2
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Problem Set (HW4)