A platform rotates counterclockwise at a constant angular speed in a vertical circle, as shown above. The platform remains horizontal. 12. Which of the following correctly ranks the normal force of the platform on an object sit- ting on the platform at each of the four labeled locations?
A.
\(1=2=3=4\)
B.
\(1=4> 2=4\)
C.
\(1> 2=4> 3\)
D.
\(3> 2=4> 1\)
Exam No：AP Physics 1 Problem Set 1 Year：2024 Question No：APPhysics12024AP0168
Answer:
D
Knowledge points:
2.5 Newton’s Third Law and Free-Body Diagrams
3.6 Centripetal Acceleration and Centripetal Force
Solution:
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