Note that only those on the WFU campus can access streaming MPG, because of
bandwidth limitations.
Demo |
Discussion |
Streaming
|
Download
|
Demo
page
|
Mechanics
|
|
|
|
|
Collisions 1
|
One ball strikes another of equal mass. What will happen?
Why? |
Real
MPG
|
Real
MPG
|
|
Collisions 2
|
1 ball hits many of equal mass. What will happen? Why does
only 1 ball emerge? |
Real
MPG
|
Real
MPG
|
|
Collisions 3
|
Now there are two balls incoming. |
Real
MPG
|
Real
MPG
|
|
Collisions 4
|
All but two balls are incoming, striking two balls at rest. |
Real
MPG
|
Real
MPG
|
|
Tennis and basketball bounce
|
Why does the tennis ball fly so high? |
Real
MPG
|
Real
MPG
|
|
Torque 1
|
How does this distance from the support affect the number
of masses needed to achieve balance? |
Real
MPG
|
Real
MPG
|
|
Torque 2
|
Which is important: the vertical distance, the horizontal
distance, or the total distance from the support? |
Real
MPG
|
Real
MPG
|
|
Angular momentum
|
What happens when a skater in a spin brings his arms in? |
Real
MPG
|
Real
MPG
|
|
Angular momentum 2
|
The wheel only allows rotation about the vertical axis, so
the vertical component of angular momentum is conserved. |
Real
MPG
|
Real
MPG
|
|
Angular momentum 3
|
What if the wheel is initially spinning horizontally? |
Real
MPG
|
Real
MPG
|
|
Vector angular momentum and vector torque vector nature
|
Why does the wheel not fall down? |
Real
MPG
|
Real
MPG
|
|
Fluids
|
|
|
|
|
Curve ball
|
A curve ball illustrates Bernoulli's Principle. The ball is
thrown with side spin. As seen from above, the ball spins clockwise. Which
way will it break. |
Real
MPG
|
Real
MPG
|
|
Ball in air stream
|
Balancing a ping pong ball on a stream of air is easy. Why
is this a point of stable equilibrium, that is, why does the ball
stay in the center of the air stream? |
Real
MPG
|
Real
MPG
|
|
Picking up a ball with compressed air
|
Compressed air is blowing out of the funnel, so what
is keeping the ping pong ball in? |
Real
MPG
|
Real
MPG
|
|
Electricity and Magnetism
|
|
|
|
|
Van de Graff
|
Static electricity. The small ball is grounded. Notice what
happens when a grounded ice pick is brought near? |
Real
MPG
|
Real
MPG
|
|
Tesla coil and electric fields
|
The fluorescent bulb glows without any wires connecting it. |
Real
MPG
|
Real
MPG
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|