Stability II: Gravity vs. Buoyancy Centers

Details

• Personal Author:
  Backus A
• Description:
  As we saw in the first installment in this series in stability (CFN August 2003, page 23A), the center of gravity is a downward force that appears to be exerted from a single point or center. Now, let's look at the center of buoyancy and how it relates to the center of gravity in various situations. Any vessel or container that is floating in a liquid has a center of buoyancy as well as a center of gravity. While the center of gravity is the point through which gravity seems to push down, the center of buoyancy is the point through which buoyancy or lift seems to push up. The center of buoyancy is the center of the volume of the vessel that is under the water. The center of buoyancy moves base on how much of the vessel is under water. That contrasts to the center of gravity, which moves when the load is raised, lowered, or moved to the side as we learned from the experiment in the August article. It is the relative position of these two centers that determines whether a vessel will capsize. [Description provided by NIOSH]
• Subjects:
  Hunting Occupational Health Safety Workplace
• Keywords:
  Equipment Design Equipment Reliability Fishing Fishing Industry Gravitational Forces Load Monitoring Work Environment Workers
• ISSN:
  0273-6713
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Massachusetts ; OSHA Region 1
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20061913
• Citation:
  Commercial Fish News 2003 Sep; :13B
• Contact Point Address:
  Ann Backus, MS, Director of Outreach, Department of Environmental Health, Harvard School of Public Health, Boston MA
• Email:
  abackus@hohp.harvard.edu
• Federal Fiscal Year:
  2003
• Performing Organization:
  Harvard School of Public Health
• Peer Reviewed:
  False
• Start Date:
  20030701
• Source Full Name:
  Commercial Fisheries News
• End Date:
  20050630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:053451bfb29e072d65ec3179e0ab81f1c6b20e9982c902754b30003dd4a2e002266c5bc37c899737f64e1e22b77df2eeaa972263091c3467e7f962c99d25fbe7
• Download URL:
  https://stacks.cdc.gov/view/cdc/225258/cdc_225258_DS1.pdf
• File Type:
  [PDF - 211.30 KB ]