This subject is divided into the subtopics below; selecting a subtopic will take you to a list of specific demos that relate to that area. You can browse other subjects from the navigation on the left. You can search for specific demos using the Search...
Lead Brick & Hammer [S | t | —] Hold a 25-lb lead brick in your hand and hit it as hard as you can with a hammer. You won't feel a thing. Dinner Table [M | t+ | ★★★] Sliding tablecloth out from under posh dinner setting. [ In-Depth Description] Diving Egg...
In the absence of air resistance all bodies, regardless of size or weight, fall with the same acceleration at the same point above the Earth. Here a feather and a dime (see Comments) fall under...
Sliding tablecloth out from under posh dinner setting.
What it shows:
A body will remain at rest unless a force acts upon it. So too will your best china remain in place as the table cloth is whipped from under it providing the friction between the cloth...
Irregular lamina with marked center-of-mass tossed in air.
What it shows:
The center of gravity fixed in (or outside) the object always orients itself with minimum potential energy on a vertical line below the support point. When an irregular shape is...
A physical pendulum with two adjustable knife edges for an accurate determination of "g".
What It Shows
An important application of the pendulum is the determination of the value of the acceleration due to gravity. By adding a second knife-edge pivot and...
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...
Concrete block smashed on lecturer's chest with sledge hammer.
What it shows:
The lecturer (or someone else) lies on a bed-of-nails without discomfort, thus demonstrating the concept of pressure, which is the force per unit area. For added drama the person...