AN INSTRUCTOR’S SOLUTIONS MANUAL TO ACCOMPANY
An introduction to mechanical engineering,
enhanced fourth edition
JONATHAN WICKERT AND KEMPER LEWIS
, Contents
Preface .................................................................................................................................v
Chapter 2.............................................................................................................................1
Chapter 3.......................................................................................................................... 19
Chapter 4.......................................................................................................................... 59
Chapter 5........................................................................................................................ 104
Chapter 6........................................................................................................................ 150
Chapter 7........................................................................................................................ 210
Chapter 8........................................................................................................................ 253
, Chapter 2: M echanical Design
P2.1: give three examples of engineered products that must be circular in shape and explain
why. Any ball is not allowed as an answer!
Examples include:
· Dvd’s
· Cd’s
· Manhole covers
· Railroad advance warning signs
· Wheel (for flat roads)
· Axles
· Bullet cross-section (balanced for stable flight)
· European speed limit sign
· Any shape with minimized arc length/surface area for given area/volume
· Optimized pressure vessel cross sections
· Us coin
· Lens (part of circle)
· Optimal nozzle/diffuser (no edge effects)
· Optimal capillary tube
· Optimal suction cup
· Traffic circle
· Thrown pot (on potting wheel)
3
, Chapter 2: M echanical Design
P2.2: give three examples of engineered products that must be triangular in shape and
explain why.
Examples include:
· Yield signs
· The triangle instrument
· Billiards rack
· Knife blade (cross-section)
· Supports for finishing wood (pyramids or cones, must come to a point)
· Splitting wedge
· Handicap ramp viewed from side (to meet code)
· Three equally spaced instances per rotation cam
· 30°-60°-90° or 45°-45°-90° drafting triangle
· One of six identical pieces that can be assembled into a hexagon
· Chisel point
4
An introduction to mechanical engineering,
enhanced fourth edition
JONATHAN WICKERT AND KEMPER LEWIS
, Contents
Preface .................................................................................................................................v
Chapter 2.............................................................................................................................1
Chapter 3.......................................................................................................................... 19
Chapter 4.......................................................................................................................... 59
Chapter 5........................................................................................................................ 104
Chapter 6........................................................................................................................ 150
Chapter 7........................................................................................................................ 210
Chapter 8........................................................................................................................ 253
, Chapter 2: M echanical Design
P2.1: give three examples of engineered products that must be circular in shape and explain
why. Any ball is not allowed as an answer!
Examples include:
· Dvd’s
· Cd’s
· Manhole covers
· Railroad advance warning signs
· Wheel (for flat roads)
· Axles
· Bullet cross-section (balanced for stable flight)
· European speed limit sign
· Any shape with minimized arc length/surface area for given area/volume
· Optimized pressure vessel cross sections
· Us coin
· Lens (part of circle)
· Optimal nozzle/diffuser (no edge effects)
· Optimal capillary tube
· Optimal suction cup
· Traffic circle
· Thrown pot (on potting wheel)
3
, Chapter 2: M echanical Design
P2.2: give three examples of engineered products that must be triangular in shape and
explain why.
Examples include:
· Yield signs
· The triangle instrument
· Billiards rack
· Knife blade (cross-section)
· Supports for finishing wood (pyramids or cones, must come to a point)
· Splitting wedge
· Handicap ramp viewed from side (to meet code)
· Three equally spaced instances per rotation cam
· 30°-60°-90° or 45°-45°-90° drafting triangle
· One of six identical pieces that can be assembled into a hexagon
· Chisel point
4
