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--- book:chap2:2.6_physics_application_balancing_forces [2021/10/31 18:23] – jv
+++ book:chap2:2.6_physics_application_balancing_forces [2022/04/01 21:00] (current) – jv
@@ Line 1: / Line 1: @@
+[[forcestorques|2. Balancing Forces and Torques]]
+  * [[  2.1 Motivation and Outline| 2.1 Motivation and outline: forces are vectors ]]
+  * [[  2.2 Sets| 2.2 Sets ]]
+  * [[  2.3 Groups| 2.3 Groups ]]
+  * [[  2.4 Fields| 2.4 Fields ]]
+  * [[  2.5 Vector spaces| 2.5 Vector spaces ]]
+  * ** 2.6.  Physics application: balancing forces **
+  * [[  2.7 The inner product | 2.7 The inner product]]
+  * [[  2.8 Cartesian coordinates | 2.8 Cartesian coordinates]]
+  * [[  2.9 Cross products --- torques| 2.9 Cross products — torques ]]
+  * [[ 2.10 Worked example Calder's mobiles| 2.10 Worked example: Calder's mobiles ]]
+  * [[ 2.11 Problems| 2.11 Problems ]]
+  * [[ 2.12 Further reading| 2.12 Further reading ]]
+----
 ===== 2.6 Physics application: balancing forces =====
@@ Line 105: / Line 121: @@
 <WRAP #quest_forceSelftest-rest > Problem 2.14: ** Particles at rest **\\
-There are three forces acting on the center of mass of a body. In which cases does it stay at rest?\\
+There are three forces acting on the center of mass of a body. In which cases does it stay at rest?
 {{ :book:chap2:forceselftest-rest.png?direct&600 |}}
+</WRAP>
-</WRAP>\\
+----
 <WRAP #quest_forceSelftest-vectorSum >Problem 2.15: ** Graphical sum of vectors **\\
@@ Line 115: / Line 133: @@
 {{ :book:chap2:forceselftest-vectorsum1.png?direct&600 |}}
 {{ :book:chap2:forceselftest-vectorsum2.png?direct&600 |}}
-</WRAP>\\
+</WRAP>
+----
 <WRAP #quest_forceSelftest-Muskelprotz >Problem 2.16: ** Towing a stone **\\
 Three Scottish muscleman ((In highland games one still uses Imperial Units. A hundredweight (cwt) amounts to eight stones (stone) that each have a mass of $14$ pounds(lb). A pound-force (lbg) amounts to the gravitational force acting on a pound. One can solve this problem without converting units.)) try to tow a stone with mass $M=20\text{cwt}$ from a field. Each of them gets his own rope, and he can act a maximal force of
-$300\text{lbg}$ as long as the ropes run in directions that differ by at least $30^\circ$\\
+$300\text{lbg}$ as long as the ropes run in directions that differ by at least $30^\circ$
   -  Sketch the forces acting on the stone and their sum. By which ratio is the force exerted by three men larger than that of a single man?
   -  The stone counteracts the pulling of the men by a static friction force $\mu M g$, where $g$ is the gravitational acceleration. What is the maximum value that the friction coefficient $\mu$ may take when the men can move the stone?
-</WRAP>\\
+</WRAP>
 ~~DISCUSSION|Questions, Remarks, and Suggestions~~