Week 18

This week we learned about centripical force. I realize that was spelled wrong. I learned that this is the force that allows a spinning object to be pulled around by a string, and remain in the air by the force of which a counter weight on the end of the string and a person moving the string in a circle. It was really interesting to me on how a smaller radius of the string to weight will actually have a faster velocity than a larger radius, and that i t takes more force to allow a smaller radius to do a full rotation than a larger radius. Weird. We also learned about how when an object on the end of the string, and it is let go going a certain direction, it will fly in the direction of which it was intended to go. Its hard to explain, but if an object is being spun around counter clock wise, if it is let go when its at the north dorection, it fly towards the west direction because thats what way it was going. Another thing i found interesting and easy to understand is that although the object is going the same velocity, the acceleration changes. Since it is always going in a different direction (North west east south),its acceleration is changing. Acceleeation is either and change in velocity or direction. I found the assesment pretty easy, except for the last problems becuse they were almost like trick questions. I got the assesment back today and yeah, i didnt do well on the last questions, but i did well on the rest of them. Last thing, when the object is being flown around, the faster it is going, the more force it expells on the counterweight on the end of the string therefor it requires more force to hold the counter wights down (your hand).