The centroidal mass moment of inertia of the pulley assembly is 20 ft-lb-s 2. Determine (a) the tension in the cord supporting 161-lb block , (b) the tension supporting the 322-lb block, and (c) the angular acceleration of the pulley system . Hint: Determine first the direction of motion, i.e. will block A move up or down?

The centroidal mass moment of inertia of the pulley assembly is 20 ft-lb-s 2. Determine (a) the tension in the cord supporting 161-lb block , (b) the tension supporting the 322-lb block, and (c) the angular acceleration of the pulley system . Hint: Determine first the direction of motion, i.e. will block A move up or down?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter1: Heat, Temperature, And Pressure

Section: Chapter Questions

Problem 17RQ: Convert 22C to Fahrenheit.

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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 centroidal mass moment of inertia of
the pulley assembly is 20 ft-lb-s
2. Determine (a) the tension in the cord
supporting 161-lb block , (b)
the tension supporting the 322-lb block, and (c) the angular
acceleration of the pulley system .
Hint: Determine first the direction of
motion, i.e. will block A move up or
down?

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