Professor John Barry Phys 2125 Lab 9 Acceleration Due to Gravity Introduction Th

Question

Professor John Barry Phys 2125 Lab 9 Acceleration Due to Gravity Introduction The purpose of this lab is to measure the acceleration of a cart moving down an incline, and compare the measured value to the theoretical A cart on an incline will roll down the incline as it is pulled by gravity. The direction of the force of gravity is straight down, but the component of the acceleration due to gravity that is parallel to the inclined surface is only a fraction of the total acceleration due to gravity: a = g*Sind here is the angle of incline Data Length of track, L = 122 cm Height, h 20 cm Angle of track, = arcsin(h/L)-0. 165 radians Acceleration of cart = 1.61 m/s2 . · 1.2 Run #1 | 0.8 0.4 Linear mt +b m= 1.55 ±0.0026 b =-1.46 ± 0.0023 0.0 r1.000 -0.4 -0.8

Explanation / Answer

Conclusion:

We measured acceleration of a cart as it moves down an incline and compared it with the theoretical values. We have our result within 3.5% of the theoretical value. This shows that in actual practice, the effect of friction cannot be ignored. Also, on addition of masses the accelaration decreases, which confirms that along with friction, air resistance is also significant, which is usually ignored in theoretical calculations.

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