MECH324 - Homework Hints, Answers, and Extra Requirements

Homework 6 (Chapter 7)

TO ENHANCE YOUR LEARNING, PLEASE TRY TO WORK THE PROBLEMS FIRST WITHOUT LOOKING AT THE HINTS AND ANSWERS BELOW.

MAKE SURE YOU SATISFY ALL REQUIREMENTS LISTED BELOW AND IN THE ORIGINAL PROBLEM STATEMENTS (UNLESS INDICATED OTHERWISE BELOW).

NOTE - BECAUSE MOST ANSWERS ARE PROVIDED, IT IS VERY IMPORTANT THAT YOU SHOW ALL STEPS IN YOUR WORK.  THE GRADING WILL BE BASED ON THE COMPLETENESS, CLARITY, AND CORRECTNESS OF YOUR WORK, NOT JUST THE ANSWERS YOU PROVIDE.


7-1
[20 pts]
  • report the angle of the position vector to point B (θB = 101°)
  • report all acceleration components and results in units of in/sec2
  • AA = -43664 - 48260j
  • AB = 14248 - 56999j

7-4a
[40 pts]
  • report your answers for the "open" configuration (circuit) only
  • θ4 = -242.7 (117.3°), θ3 = -271.2 (88.8°)
  • Ω3 = -5.991, Ω4 = -3.992
  • α3 = 26.08, α4 = 53.33
  • AA = 200.0, θAA = -150.0°
  • AB = 500.9, θAB = -136.1°
  • AP = 418.6, θAP = -119.5°

7-12
[15 pts]
  • Also calculate the Coriolis force, assuming the person weighs 170 lb

7-57
[25 pts]
  • Note - Figure P7-26 is on page 386 (not 388, as reported in the book).
  • use the notation and dimensions shown in this figure
  • report all acceleration values in units of mm/sec2
  • plot acceleration vs. distance along the belt starting at point A. Include the point labels (A, B, C, D) on your plot