An Introduction To Mechanical Engineering, Enhanced
Edition, 4th Edition By Wickert, (CH 2 - 8)
SOLUTION MANUAL
, Contents
Chapter 2........................................................................................................................................................................... 1
Chapter 3......................................................................................................................................................................... 19
Chapter 4......................................................................................................................................................................... 59
Chapter 5........................................................................................................................................................................104
Chapter 6........................................................................................................................................................................150
Chapter 7........................................................................................................................................................................210
Chapter 8........................................................................................................................................................................253
, Chapter 2: Mechanical Design
Chapter 2 Solutions
1
, Chapter 2: Mechanical Design
P2.1: Give three examples oḟ 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 (ḟor ḟlat roads)
· axles
· bullet cross-section (balanced ḟor stable ḟlight)
· European speed limit sign
· any shape with minimized arc length/surḟace area ḟor given area/volume
· optimized pressure vessel cross sections
· US coin
· lens (part oḟ circle)
· optimal nozzle/diḟḟuser (no edge eḟḟects)
· optimal capillary tube
· optimal suction cup
· traḟḟic circle
· thrown pot (on potting wheel)
P2.2: Give three examples oḟ engineered products that must be triangular in shape and explain why.
Examples include:
· yield signs
· the triangle instrument
· billiards rack
· kniḟe blade (cross-section)
· supports ḟor ḟinishing wood (pyramids or cones, must come to a point)
· splitting wedge
· handicap ramp viewed ḟrom side (to meet code)
· three equally spaced instances per rotation cam
· 30°-60°-90° or 45°-45°-90° draḟting triangle
· one oḟ six identical pieces that can be assembled into a hexagon
· chisel point
2
Edition, 4th Edition By Wickert, (CH 2 - 8)
SOLUTION MANUAL
, Contents
Chapter 2........................................................................................................................................................................... 1
Chapter 3......................................................................................................................................................................... 19
Chapter 4......................................................................................................................................................................... 59
Chapter 5........................................................................................................................................................................104
Chapter 6........................................................................................................................................................................150
Chapter 7........................................................................................................................................................................210
Chapter 8........................................................................................................................................................................253
, Chapter 2: Mechanical Design
Chapter 2 Solutions
1
, Chapter 2: Mechanical Design
P2.1: Give three examples oḟ 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 (ḟor ḟlat roads)
· axles
· bullet cross-section (balanced ḟor stable ḟlight)
· European speed limit sign
· any shape with minimized arc length/surḟace area ḟor given area/volume
· optimized pressure vessel cross sections
· US coin
· lens (part oḟ circle)
· optimal nozzle/diḟḟuser (no edge eḟḟects)
· optimal capillary tube
· optimal suction cup
· traḟḟic circle
· thrown pot (on potting wheel)
P2.2: Give three examples oḟ engineered products that must be triangular in shape and explain why.
Examples include:
· yield signs
· the triangle instrument
· billiards rack
· kniḟe blade (cross-section)
· supports ḟor ḟinishing wood (pyramids or cones, must come to a point)
· splitting wedge
· handicap ramp viewed ḟrom side (to meet code)
· three equally spaced instances per rotation cam
· 30°-60°-90° or 45°-45°-90° draḟting triangle
· one oḟ six identical pieces that can be assembled into a hexagon
· chisel point
2
