The pendulum consists of a 35-lb sphere R-0.6 ft, and a 14-lb slender rod a-13 ft. Just after the cord AB is cut, Compute the tangential component of reaction of the pin O on the disk Re in pounds. (Hint: use parallel theorem for the inertial moment) O

The pendulum consists of a 35-lb sphere R-0.6 ft, and a 14-lb slender rod a-13 ft. Just after the cord AB is cut, Compute the tangential component of reaction of the pin O on the disk Re in pounds. (Hint: use parallel theorem for the inertial moment) O

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter10: Virtual Work And Potential Energy

Section: Chapter Questions

Problem 10.20P: Locate the instant center of rotation of bar AB for each case shown.

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Concept explainers

Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

Question

The pendulum consists of a 35-lb sphere R-0.6 ft, and a 14-lb slender rod a-13 ft. Just after the cord AB is cut,
Compute the tangential component of reaction of the pin O on the disk Re in pounds. (Hint: use parallel theorem for the inertial moment)

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Step 1: Given-Information:

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Step 2: Calculate moment about O.

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Step 3: Acceleration of Rod:

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Step 4: Tangential reaction:

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