# PHYS 1 LAB 1 course .docx - Motion in Free-Fall Objectives...

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Motion in Free-Fall Objectives : Determine the constant acceleration that is caused by gravity. Also, compare the experimental acceleration and the theoretical acceleration 9.8 m/ s 2 . 1
Introduction Free-fall motion of an object has a constant acceleration due to gravity. The equation S = v 0 t + ¿ ½ a t 2 will be used to find the acceleration when the velocity, displacement, and time are known. Apparatus and Procedure A 60-cm long paper tape, a tape timer, a falling object, a scale and a Vernier caliper were prepared. Step 1: The end of the 60-cm long paper tape was attached to the falling object. Step 2: Attached the other end of the paper tape to the tape timer (Figure 1). (Figure 1) Step 3: The tape timer was switched to 40 Hz frequency. Step 4: The falling object was released; therefore, there were dots on the tape paper. 2
Step 5: Each dot was labeled from 0 to 13. Step 6: The length between each dot was measured by using Vernier caliper. Step 7: The length from 0 to each dot was measured by scale. Results and Analysis The experimental data was recorded to Table 1. n t (s) S n (cm) S n (cm) t (at midpoint) (s) v (cm/s) 0 0 0 - - - 1 1/40 0.60 0.610 1/80 24.2 2 2/40 1.60 0.990 3/80 39.6 3 3/40 3.30 1.650 5/80 66.0 4 4/40 5.50 2.140 7/80 85.6 5 5/40 8.40 2.830 9/80 113.2 6 6/40 11.90 3.390 11/80 135.6 7 7/40 16.00 4.070 13/80 142.8 8 8/40 20.60 4.620 15/80 184.8 9 9/40 26.00 5.400 17/80 216.0 10 10/40 31.80 5.770 19/80 230.8 11 11/40 38.10 6.400 21/80 256.0 12 12/40 45.20 7.050 23/80 282.0 13 13/40 52.30 7.680 - -