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--- demonstrations:1_mechanics:1d_motion_in_two_dimensions:string_shooter:start [2019/02/14 23:33] – external edit 127.0.0.1
+++ demonstrations:1_mechanics:1d_motion_in_two_dimensions:string_shooter:start [2020/01/28 20:56] (current) – demoroom
@@ Line 1: / Line 1: @@
 ====== String Shooter ======
-{{tag> needs_review untagged unlocated}}
+{{tag> mechanics oscillations_and_waves centripetal_force tension located}}
 <WRAP box right>
@@ Line 11: / Line 11: @@
 ===== Description =====
-Show centripetal force and slow moving waves
+This demonstration consists of a pair of DC motors mounted on a piece of MDF with wheels so that they can be used to propel a loop of string. A pair of batteries provides their power.
-This device shoots out a loop of string in a continuous ellipse. If the loop is slightly disturbed, slow moving waves will travel along the string.
 ===== Purpose =====
+This device shoots out a loop of string in a continuous ellipse. With it you can show centripetal force and slow moving waves; if the loop is slightly disturbed, slow moving waves will travel along the string.
 ===== Apparatus =====
+  * String shooter
 ===== Setup =====
+Simply flick the switch. Make sure that the string isn't tangled up or caught on anything before you do.
 ===== Notes =====
+You may have to repair a string breakage. It isn't enough to just tie the broken ends of the string back together, since any knots in the string will get caught between the wheels. A needle and thread can be used to more cleanly splice the string back together.
+The rubber on the wheels may also wear out. Currently it's made out of pieces of rubber balloon stretched over the wheels.
 <WRAP group>
@@ Line 47: / Line 45: @@
 </WRAP>
 <WRAP tablewidth 100%>
-| **Location** | ---- |
+| **Location** | M3 |
 | **Maker** | Unknown |
 | **Current State** | Working |