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Sliding of Two Blocks With and Without Friction and Hitting a Spring.
 
Problem Statement:
 
Two blocks slide on slopes with the  length of 100 meters
and incline of 45 degrees.
They will kit a spring with the coefficient of 1.
 One slope has no friction and
the other has the friction with the friction coefficient mu of 0.5.
Plot the traveling distance 
of these two blocks versus time and animate their motions.
 Animation
 
This program
blocks_spring.ch
uses Ch QuickAnimation to 
animate the motion of sliding blocks shown below.
 
 
 
 Plotting
 
The above same program 
blocks_spring.ch
uses Ch plotting capabilities
to plot the traejctories of sliding blocks shown below
 
 
 
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