ENGR-36_Lab-14_Fa08_Lec-Notes.ppt1

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

Bruce Mayer, PELicensed Electrical & Mechanical Engineer

BMayer@ChabotCollege.edu

Engineering 36

Lab-14 Lab-14 Chp7Chp7

EquilEquilProbleProble

msms

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt2

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

Rocking BeamRocking Beam

Given Geometry and Loading Find distance “a” such that The Reaction at Pt-B is limited:

jlbBjlb ˆˆ 10050

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt3

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt4

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt5

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt6

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt7

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

Spring Spring CrankCrank

Find• Tension, T

• Reactions at Points C & D

Given• 4 inch Pulley at

Pt-A

• kspring = 2 lb/in

• Spring Unstretched for θ = 0°

• Brg at Pt-C is NOT a thrust Brg

• The Machine is at Rest and in equilibrium

• θ = 180°

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt8

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt9

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt10

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt11

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

Wire Suspended PipeWire Suspended Pipe

Given Lineal Density for pipe of 5 lb/ft

Find• The Largest Possible value for “a” the

will not cause the assy to tip

• The Tension in each Wire

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt12

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt13

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt14

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

Cable Supported BoomCable Supported Boom

Loading and Geometry Find• Tension in the two cables

• The Reaction at Ball-&-Socket Support at Pt-A

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt15

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt16

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt17

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics

ENGR-36_Lab-14_Fa08_Lec-Notes.ppt18

Bruce Mayer, PE Engineering-36: Vector Mechanics - Statics