### Author Topic: FUNNEL CART ON INCLINE  (Read 28199 times)

#### Fu-Kwun Hwang

• Hero Member
• Posts: 3062
##### FUNNEL CART ON INCLINE
« on: April 11, 2005, 04:51:34 pm »
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The following is a simulation for a real physics demonstration.

A ball is placed in the funnel and the funnel cocked by compressing a spring. The track is raised at one end so that when it is released the cart accelerates down the track. At a certain point a bump below the track trips a lever, releasing the spring and ejecting the ball perpendicular to the track.
Where will the ball fall?

* (a) The ball will fall in front of the funnel.
* (b) The ball will fall behind the funnel.
* (c) The ball will fall IN the funnel.

[b:601ec2c994]You can drag the left slider to change the angle of the track. [/b:601ec2c994]
You can check out http://www.physics.umd.edu/lecdem/services/demos/demosc2/c2-27.htm for a real demonstration or click the above picture to watch the movie.

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#### jmscott

• Newbie
• Posts: 2
##### Re: FUNNEL CART ON INCLINE
« Reply #1 on: July 31, 2007, 11:15:00 am »
I have 2 questions regarding this applet. First, I notice that the values for yp and k appear at the top of the respective slider bars. However, when I download the .xml file to modify with ejs, the values do not appear. I cannot figure out how to alter the slider properties to display the corresponding values.

Secondly, I am wondering if it is possible to not have the trace be a solid line, but instead leave a point at regular time intervals (the accelerated motion would then be visibly obvious as the distance between adjacent points would change).

Love the site!