A slender 5.4-kg rod can rotate in a vertical plane about a pivot at B. A spring of constant k = 297 N/m and of unstretched length 150 mm is attached to the rod as shown. Knowing that the rod is released from rest in the position shown ( pos(1) ). The rod has rotated through 90°. The work done by spring is 600 mm D В 120 mm 350 mm

A slender 5.4-kg rod can rotate in a vertical plane about a pivot at B. A spring of constant k = 297 N/m and of unstretched length 150 mm is attached to the rod as shown. Knowing that the rod is released from rest in the position shown ( pos(1) ). The rod has rotated through 90°. The work done by spring is 600 mm D В 120 mm 350 mm

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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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

1-The work done by weight is ?

2-Polar moment of inertia about B is ?

3-angular velocity at position 2 ?

A slender 5.4-kg rod can rotate in a vertical plane about a pivot at B. A spring of constant k = 297 N/m and of unstretched length 150 mm is
attached to the rod as shown. Knowing that the rod is released from rest in the position shown ( pos(1)). The rod has rotated through 90°.
The work done by spring is
600 mm
B
120 mm
C
350 mm

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