The 20-lb disk is rigidly attached to the 7-lb bar OA, which is pivoted freely about a horizontal axis through point O. If the system is released from rest in the position shown, determine the angular velocity w of the bar and the magnitude R of the pin reaction at O after the bar has rotated 90° OA = 21" Answers: 781 rad/s 104.97 Ib
The 20-lb disk is rigidly attached to the 7-lb bar OA, which is pivoted freely about a horizontal axis through point O. If the system is released from rest in the position shown, determine the angular velocity w of the bar and the magnitude R of the pin reaction at O after the bar has rotated 90° OA = 21" Answers: 781 rad/s 104.97 Ib
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
![The 20-lb disk is rigidly attached to the 7-lb bar OA, which is pivoted freely about a horizontal axis through point O. If the system is
released from rest in the position shown, determine the angular velocity w of the bar and the magnitude R of the pin reaction at O
after the bar has rotated 90°
OA = 21"
Answers:
7.81
rad/s
104.97
Ib](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8144a404-58b4-4ddd-a5aa-0d9733cb7e95%2Fcc4077ad-64d7-4941-a148-dc29cfce34f4%2Fuhu2zqml_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The 20-lb disk is rigidly attached to the 7-lb bar OA, which is pivoted freely about a horizontal axis through point O. If the system is
released from rest in the position shown, determine the angular velocity w of the bar and the magnitude R of the pin reaction at O
after the bar has rotated 90°
OA = 21"
Answers:
7.81
rad/s
104.97
Ib
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