Centripetal Forces

# Centripetal Forces - Kevin Chou AP Physics Centripetal...

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Kevin Chou AP Physics Centripetal Force Lab 11/15/09 Introduction The purpose of this lab was to find the centripetal force when all the equations are combined. By combining the acceleration equation a=V 2 /r and v= 2 π 2 /T, the equation for uniform circular motion would be a=4 π 2 r/T 2 . And by using the second law of motion to determine the force needed to maintain this motion: m(4 π 2 r/T 2 ) Procedure The first part of the lab consists of three trials for three different radii were performed in this lab. The mass of the object was 460g and the three different radii is 20cm, 18cm, and 15 cm. The object was revolved 10 times over the pointed tip and the time it takes was recorded. The pointed tip was placed in 20cm, 18cm, and 15 cm apart from the revolving object. The second part of the lab was to determine how much mass it takes to pull the object until it was exactly over the pointed tip. The pointed tip was placed 10cm, 18cm, and 15cm apart from the object. Hanging masses were then

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