The 6.0-1b bar is pinned at its center O and connected to a torsional spring. The spring has a stiffness 5.4 lb ft/rad, so that the torque developed is M = (5.40) lb ft, where is in radians. (Figure 1) Part A If the bar is released from rest when it is vertical at = 90°, determine its angular velocity at the instant 0=0°. Express your answer to three significant figures and include the appropriate units.

The 6.0-1b bar is pinned at its center O and connected to a torsional spring. The spring has a stiffness 5.4 lb ft/rad, so that the torque developed is M = (5.40) lb ft, where is in radians. (Figure 1) Part A If the bar is released from rest when it is vertical at = 90°, determine its angular velocity at the instant 0=0°. Express your answer to three significant figures and include the appropriate units.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.8.10P: A bumping post at the end of a track in a railway yard has a spring constant k = 8.0 MN/m (see...

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