M2 Physics - Data Sheets and Conceptual Questions

M2 Physics - Data Sheets and Conceptual Questions Newton's Laws of Motion (M2) - Data Sheets Before answering questions listed below read the lab description and instructions written in the file “M2 – Description”. Make sure to write answers in the highlighted lines . Activity 1: Constant Acceleration (1.5 p.) Before you start analyzing position, velocity and acceleration data, watch the short movie M2 Act1.MOV (available in the “Lab M2” module on Brightspace) showing motion of the cart. Acceleration values ( m/s2 ) Deviations from the average acceleration: Da=a−aAV Squared deviations from the average acceleration: ( Da)2 1 -0.347 2 -0.344 3 -0.342 4 -0.338 5 -0.332 Average aAV = Sum = Average value of the acceleration: aAV = ( m/s2 ) (as average of five instantaneous accelerations). Calculate the standard deviation of acceleration sa using the formula given in the “Lab Introduction and Experimental Errors” file on Brightspace. The final result of the acceleration measurements (1-5) should be written as: a = aAV ± sa {e.g., a = 0.43 ± 0.12 m/sec2} sa = ( m/s2 ) Therefore, the result for average acceleration is: a = ± ( m/s2 ) Calculate the theoretical value of acceleration (c.f., Figure 3 in the file “M2 - Description). Measure the distance between the two outside legs supporting the track (use the ruler on the track to measure this value). l = 1.435 ( m ) The height of the aluminum block under one of the legs: h = 5.08 cm = 0.0508 m atheor. = ( m/s2 ) Calculate the absolute difference between experimental value and the theoretical value of acceleration: ∆a = |aAV - atheor.| = ( m/s2 ) Calculate the percent difference between experimental value and the theoretical value of acceleration: ∆a = 100%*|(aAV - atheor.)/ atheor.| = ( % ) Activity 2: Newton's Second Law (1.5 p.)