Find the moments of inertia in kg-m2 of the pendulum shown in the figure below about the z-axis. The x and y axes are in the plane of the pendulum. Ris a slender rod of 1.0 kg, and D is a semicircular disk of 2.0 kg. L = 1.1 m and r = 0.25 m. R D

Find the moments of inertia in kg-m2 of the pendulum shown in the figure below about the z-axis. The x and y axes are in the plane of the pendulum. Ris a slender rod of 1.0 kg, and D is a semicircular disk of 2.0 kg. L = 1.1 m and r = 0.25 m. R D

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter9: Moments And Products Of Inertia Of Areas

Section: Chapter Questions

Problem 9.87RP

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Concept explainers

Moment of Inertia

Inertia can be termed as a resistance offered by a body to change its state. A rigid body initially at rest will apply resistance when acted by an external force that tends to change its state of rest or velocity, or a body initially at motion will provide resistance in changing its state of velocity or motion for coming to a state of rest. In other words, Newton's first law of motion describes the law of inertia of a rigid body.

Question

Find the moments of inertia in kg-m2 of the pendulum shown in the figure below
about the z-axis. The x and y axes are in the plane of the pendulum. Ris a slender
rod of 1.0 kg, and D is a semicircular disk of 2.0 kg. L = 1.1 m and r = 0.25 m.
R
L
D
Figure is from "Engineering Mechanic An Introduction to Dynamics", McGill and King.

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