3-04-2017. Lab 9: Lab-Centripetal acceleration and angular speed.

Introduction: For this lab we will be testing the concept of centripetal force using a tripod and a motor attached to a board and some string with a hanging mass. To give a rundown of what the concept we are study is, centripetal force is the force that makes a body follow a curved path. Its direction is always curved to the motion of the body and it is fixated to a fixed point of the center of curvature.

Setup:

Here is a picture of what the apparatus we are using looks like. The apparatus is a horizontal rod mounted to a vertical rod all mounted to a motorized tripod. At the end of the horizontal rod we have a some string attached with a rubber stopper at the end. Outside the assembled apparatus is a ring stand with a horizontal piece of paper sticking out.

Purpose: The purpose of the trials is to find the relationship between centripetal force and its angular frequency when it rotates. The drawing of the experiment above is the diagram when will use for our calculations when determining our data. To find our ⍵, we need to measure our height from the rod attached to the tripod, the length of the string, the radius of the rod, and the height of the attached mass from the string. Once we find the dimensions of the apparatus, we can find our 𝛳 by taking the difference of the two heights using the result for our adjacent side to our angle and using the length of the string, we can use a cosine function to find 𝛳, and then using it to find ⍵.

Data: