6.750
1.000
PROBLEM 9.39 Rotated primary auxiliary view (in.)
Title: Coupler
Material: Cast iron
Given the same part provided in Problem 9.38, draw the required
multiview or views and auxiliary view or views using the arrow
and rotation arrow method.
MATH PROBLEMS
Part 8: Problems 9.40 Through 9.49
A solar panel is in the shape of a 49 3 89 rectangle. With the sun
overhead, what is the area of the shadow it casts on the ground if
it is inclined at the following angles?
PROBLEM 9.40 108
PROBLEM 9.41 208
PROBLEM 9.42 308
PROBLEM 9.43 808
PROBLEM 9.44 908
PROBLEM 9.45 What should be the area of a solar panel
inclined at 458 if the projected area from an overhead sun is to
be 100 ft2?
PROBLEM 9.46 A circular sign with an area of 77.8 ft2 casts a
shadow on the ground. The area of the shadow is 26.6 ft2. If the
sun is overhead, what is the angle that the sign is inclined from
the ground?
PROBLEM 9.47 A long post is sticking up from the ground at
an angle of 358. The sun is overhead and casting a shadow 98.3
feet long onto the ground. How long is the post?
PROBLEM 9.48 A square sign measuring 3 meters on an edge
is inclined at an angle of 258 to the ground. What is its projected
area onto the ground?
PROBLEM 9.49 A solar panel in the shape of a 49 3 89 rect–
angle casts a shadow with an area of 16 ft2 when the sun is over-
head. To what angle is it inclined?
PROBLEM 9.38 Rotated primary auxiliary view (in.)
Title: Coupler
Material: Cast iron
Draw the required multiview or views and auxiliary view or views
using the viewing-plane line rotation method.
59728_ch09_EOC_ptg01.indd 15 03/02/16 10:25 am