Centrieptal accleration and the poles of the earth

AI Thread Summary
Centripetal acceleration affects weight differently at the equator and the poles due to the Earth's rotation. At the equator, individuals experience a noticeable reduction in weight because they are in circular motion, requiring a force to maintain that motion. In contrast, at the poles, the effect is minimal since the circular motion around the Earth's axis does not significantly alter weight. The discussion draws parallels to experiences like being on a roller coaster, where centripetal forces are felt during loops. Overall, while centripetal acceleration does influence weight, its impact varies significantly based on geographic location.
huhmattg
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Why does centripetal acceleration effect your weight at say that equator but not at the poles? Does it effect but just to a small extent?
 
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At the poles, you are participating in the circular motion around the axis of rotation of the Earth. When you are at the equation, you are in circular motion. Remember the equations concerning circular motion? Some force is needed to keep you in orbit. You can experience something similar when you are on a roller coaster (at the top of the loop).
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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