3.5 feet long rotates in a horizontal plane about a vertical axis through its center. At each end of the rod is fastened a cord 6 ft. long. Each cord is inclined at Ø = 450 with the vertical and supports a weight of 45 lbs A. Which of the following gives the speed of rotation “n” in rpm? a) n = 25.12 rpm b) n = 25.12 rpm c) n = 30.20 rpm d) n = 22.13 rpm
3.5 feet long rotates in a horizontal plane about a vertical axis through its center. At each end of the rod is fastened a cord 6 ft. long. Each cord is inclined at Ø = 450 with the vertical and supports a weight of 45 lbs A. Which of the following gives the speed of rotation “n” in rpm? a) n = 25.12 rpm b) n = 25.12 rpm c) n = 30.20 rpm d) n = 22.13 rpm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
A rod 3.5 feet long rotates in a horizontal plane about a vertical axis through its center. At each end of the rod is fastened a cord 6 ft. long. Each cord is inclined at Ø = 450 with the vertical and supports a weight of 45 lbs
A. Which of the following gives the speed of rotation “n” in rpm?
a) n = 25.12 rpm
b) n = 25.12 rpm
c) n = 30.20 rpm
d) n = 22.13 rpm
B. What is the tension in the 5 feet long cord?
a) T = 58.47 lb
b) T = 63.63 lb
c) T = 51.78 lb
d) T = 48.25 lb
Transcribed Image Text:L = 6'
45 lb
Ø
3.5'
V
www.
I
I
L = 6'
45 lb
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