Ink is squirted into a fluid and mixed in until it disappears. By precisely undoing the motions in the reverse direction, the ink becomes unmixed! The demonstration seems to defy thermodynamics in that it appears that entropy decreases...
An object rolling down a hill acquires both translational and rotational kinetic energy. One must take the rotational kinetic energy into account when calculating the object's velocity at the bottom of the hill
Use conservation of energy to predict the height the arrow will reach.
What it shows:
When the string of a bow and arrow is pulled from equilibrium, the elastic potential energy in the bow is converted to kinetic energy of the arrow when the string is...
The instructor breaks several boards with a swift blow of the hand.
What it shows:
The impulse momentum theorem is demonstrated in a most dramatic way by breaking several boards with the blow of your fist. You need not be a karate expert to show how the...
Calculation of gravitational constant, with accompanying apparatus model.
What it shows
The gravitational attraction between lead spheres. The data from the demonstration can also be used to calculate the universal gravitational constant G.
Monkey released from platform is shot by simultaneously fired cannon.
What it shows:
This is a demonstration of the independence of the horizontal and vertical components of velocity of a projectile. Often referred to as "the monkey and hunter," the problem...
