1D60.65 - Water Trajectory
This simple and straightforward demonstration can be used qualitatively to illustrate various properties of projectile motion.
The demonstration is set up as shown in the above figure. The large, wooden demonstration protractor should be elevated by a block (57x73mm) just outside the metal trays. A piece of rubber tubing (3/8" OD, 1/4" ID) with a length of 1/4" OD hollow glass tubing partially inserted in one end should then be clamped to a table stand using a variable-angle clamp. Adjust the height and position of the hose so that its pivot point (the variable angle clamp) corresponds to the reference cross on the protractor. Place a series of metal trays on the lecture table so that they will collect the water from the hose. If the demonstration is being done quantitatively, a 2-meter stick can be appropriately placed on the table to measure the range of the trajectory.