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- Important Read before class
- HMK will be assigned in class
- NO LATE HMK ALLOW
- Due date next class

- Use Cartesian Components: Fx, Fy, Fz
- Discuss Problems
- Prob. 2.28 and Prob. 2.56

- Maple has UNIX complex (case sensitive).

- Cartesian Vector Form
- Unit Vectors
- Position Vector
- Dot Product:

- Or using the unit vector eF:
- If
- Remember that

- If coordinates of position are given, e.g. (dx,dy,dz)
- Magnitude of vector d:
- Then:

- Using Information of coordinates

(1) Find the Unit vector eF

(2) Express F in cartesian vector form.

z

d(2,-4,3

F=100N

y

x

- Define as:
- Dot Product of two Vectors=Scalar.

- Dot product of Unit Vectors:
- Dot Product of same Vector:

- If position given: d1(3,-2.5,3.5)ft.
- Find:
(1) Magnitude of distance:

(2) Unit vector

z

d1(3,-2.5,3.5)

y

x

(1) Find the Unit vector eF

(2) Express F in cartesian vector form.

z

d(2,-4,3)

F=100N

y

x

- Discuss Analytical Approach
- Position Vector:
- Unit Vector from position vector
- Resultant Force

- Show Maple Solution
- Problem 2.81 solved same way

- Quiz #1: Vectors
- Chapter #3: Statics of Particles
- Free Body Diagram: FBD
- Equilibrium Eqns: