Experiment02.pdf

Name_________________________ Date: _____________________Course number: _________________There are four variables that need to be measured to find the acceleration ofgravity from this setup: D, the length of the plastic tube, L, the distance between the twophotogate timers and t 1 and t 2 , the times recorded by the timers. Speed is equal to distancedivided by time. At the first timer, the speed isDv1= . Equation 3.3at1For the second timer, the speed isDv2= . Equation 3.3bt2The change between v1and v2is the acceleration. Using the kinematic equations, theacceleration can now be determined:v 2= v 1+ atEquation 3.4a2L = v11t+ 2 atEquation 3.4bFrom Equation 3.4a:v1 − v2taCombining Equation 3.4b and Equation 3.5:2v1( v2− v1) a( v2− v1)+ = L2a 2a2= D ⎛⎛ 1 1 ⎞⎞⎜⎜⎜⎜ −⎟⎟⎟⎟22L⎝⎝ t22t1⎠⎠Analog (Hand) Timer SetupDiagram of Analog Setup= Equation 3.5Equation 3.6a Equation 3.7A. BeforereleasingB. Stop timingwhen M hits floor1M pM 1 > M 2M 1M pM 2SM 2FloorM 1Page 4 of 16