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Racing Balls
When the two balls are launched from one end of the track with the same initial velocity, what will happen :
- the ball #1 on the straight track arrives at the other end first
- the ball #2 on the track with the dip arrives at the other end first
- the race is a tie - both balls reach the other end at the same time?
This is a java version for one of our physics demostration. Think about it, select the answer to active the program. Did you get the correct answer?
Press the start button to restart.
- Click the left button within the window will suspend the animation click it again to resume.
- Clcik the right mouse button and drag it up and down to change the shape of the lower track.
- Click more information checkbox to display more information
- Shape of the track ( from left to right)
section 1 red curve: part of a circle
(1/4)
tangential component of the gravitation field is the source of the
acceleration.
section 2 blue curve: Trajectory for a projectile
(with initial velocity when it entering this
region)
So, horizontal component of the velocity is a constant.
section 3 red curve: part of a circle.
The solpe for the curves match at the boundary.
particle will accelerate (as section 1) but with
different acceleration
sectin 4 blue curve: Trajectory for projectile
similar similar to section 2
section 5 green line: horizontal line.
The velocity is a constant in this region.
The horizontal component of the velocities are also shown.
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