newton’s laws i i- u c c s home（这一句型表示第一个动词laws newton’s i c c u s home）.doc

Newton’s Laws II PES 115 Report Objective The purpose of this lab is to examine and analyze static and dynamic systems using Newton’s Laws. A static system is one where the total acceleration is zero and there is no motion occurring. A dynamic system is one where the total acceleration is non-zero and the components of the system move. Furthermore, we will determine if Newton’s Laws are applicable based upon the measurements recorded and results obtained via the experimental process. Data and Calculations Part A Force boards The experiment should be set up as follows: Figure 1: Experimental setup of a static system used to prove the validity of Newton’s Laws Experimentally it is difficult to measure the angles (1, (2 and (3. Figure 2: Analytical orientation of angles at the center of the static system in a polar coordinate frame for the experimental setup The problem arises when we try to measure these angles relative to the horizontal axis, which only exists on paper. So, we need to find something else. How about measuring the angles made between the strings, (A, (B, and (C. Figure 3: Analytical orientation of angles at the center of the static system in a non-discriminate coordinate frame for ease of measurement Measured values for three separate trials: ALL THESE VALUES HAVE A +/- 0.5 Trial Number m1 m2 m3 (A (B (C 1 0.0883 kg 0.0884 kg 0.1227 kg 133o 92o 135o 2 0.1235 kg 0.0884 kg 0.1596 kg 146o 84o 130o 3 0.1227 kg 0.1235 kg 0.0884 kg 110o 137o 113o Calculated values for the three different force board configurations: Trial Number F1 F2 F3 (1 (2 (3 1 0.8662 N 0.8672 N 1.2037 N 137o 45o 270o 2 1.2115 N 0.8672 N 1.5657 N 124o 40o 270o 3 1.2037 N 1.2115 N 0.8672 N 160o 23o 270o Show one example of each of the pervious calculations We used the following method to calculate the Forces acting at the masses: We used the following method to calculate the Theta 3: (No calculation necessary.) We used the following met