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--- demonstrations:1_mechanics:1m_work_and_energy:loop_the_loop:start [2019/02/14 23:33] – external edit 127.0.0.1
+++ demonstrations:1_mechanics:1m_work_and_energy:loop_the_loop:start [2020/01/30 18:41] (current) – demoroom
@@ Line 1: / Line 1: @@
 ====== Loop The Loop ======
-{{tag>centripetal force acceleration loop needs_review untagged unlocated}}
+{{tag> centripetal_force mechanics acceleration potential_energy gravitational_potential located}}
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@@ Line 11: / Line 11: @@
 ===== Description =====
-Centripetal acceleration    Classes Used: PHYS 107
+Steel track with a loop-the-loop and fittings to be held with lab stands.
 ===== Purpose =====
+To demonstrate centripetal force. To show how our theory can be used to correctly make a prediction for the starting height required for the ball to clear the loop without falling.
-To demonstrate centripetal acceleration in a situation where the acceleration is greater than g.
 ===== Apparatus =====
+  * Loop-the-loop track
-rail fittings, ball bearings
+  * Small ball (ball bearings or other will do)
+  * Two lab stands and connectors
 ===== Setup =====
+Mount the track firmly on the lab stands using the connectors. Before presenting this demo it may be worthwhile to find the minimum height required to clear the loop and mark it with a piece of tape.
-Release the two different sized ball bearings from different heights on the twin-tubing rail.   Updated on: 06/13/13
+When showing the demo, try dropping the ball from a number of different heights. Ask the students to predict how high the ball needs to be- as high as the top of the loop? (Enough potential energy for the height, but not for the kinetic energy, so it reaches the top and falls) or higher? Releasing the ball at 5/2 the height of the loop or higher should result in it going around the loop without falling.
-===== Notes =====
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-| **Location** | ---- |
+| **Location** | MN4 |
 | **Maker** | Unknown |
 | **Current State** | Working |