![]() ![]() Make sure the data acquisition components are set up correctly, as shown in the picture.Before beginning, make sure to level your track again. The general idea will be to measure the position as a function of time for several different set-ups, in order to obtain another measurement of $g$. The position sensor measures the location of the cart at regular time intervals. Now, we will let a cart roll down the ramp and record the position as a function of time using the electronic position sensor. ($a = g \sin \left( \theta \right)= 0$) Verify that you can indeed obtain a $\theta = 0$ track.īased on this angle, estimate the static (or rolling) friction coefficient that is acting on the car when it's on the ramp. $\theta = 0$) A car placed on the track in this condition should not move. Use the thumb-screws on each end to make the track level. The lengths of our track, $L$, is 122 cm, or 1.22 m.įirst, set up the track so that it is level. The first step will be to make sure we can accurately know the angle $\theta$ we are dealing with on the ramp.įrom the schematic above, we can see that the angle of $\theta$ should be given by $ \theta = \sin^ \right)$. On the bench is a low-friction track and car. ![]() In lecture, it was shown that a frictionless object sliding down an inclined plane will undergo constant acceleration at the rate of $$a = g \sin \theta$$ where $g$ is the standard acceleration due to gravity, 9.8 m/s 2, and $\theta$ is the angle between the ramp's surface and the horizontal plane of the ground. To get anything better than two significant figures, we'll need to improve our experimental approach. Acceleration due to gravity = please log in Experiment: Leveling a ramp.įrom the previous two measurements, you've hopefully noticed that measuring little $g$ is not a trivial measurement. ![]()
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