# Physics 241

Introduction to the dot product

example of dot product

How to find a displacement vector and then a unit vector

How to write a force vector in unit vector form

Introduction to Torque

2-d Example of Calculating Torque about a point

how to use the vector definition of Torque(Moment of Force)

How to find the Moment of Force about a line

How to find a centroid

example of calculating a centroid

How to replace a distributed load with a single force vector

Help with 4-145

Hi folks,

chapt 6   5,13,17

Structural Analysis Video 1

Structural Analysis Video 2

See you monday.

Rod

October 14, 1016.

Introduction to shear and bending moment

calculating shear and moment example 1

Add chapter 7 numbers 1,5,7,11,15 . See you monday.

Rod

Shear moment diagram     I will post at least 1 more video on this soon

Shear moment diagram ex 2  ( this one is pretty long. Pay attention to the first half)

Shear moment diagram ex 3

Shear moment diagrams ex 4

Shear Moment diagrams ex 5

Dealing with the force of friction

What is the coefficient of friction?

Where does the normal go?

friction ex 1

Please watch the videos below and add  85,87,89,95, and 97 to your hw. These are in chapter 8.  11-11-2016

Friction acting on a belt

friction on a belt ex

How to find the centroid of a composite geometry

Another example of finding the centroid of a geometry

chapter 10          3,9,20    chapter 9       39,43

How to find the centroid of a 3 d geometry using integration

Moment of Inertia by integration

IN this video, I discuss numbers 7-95 and 8-27