Speed of Lever at Rest w/ 3lb Weight Attached

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SUMMARY

The discussion focuses on calculating the speed of a lever at rest with a 3lb weight attached, utilizing an extension spring that exerts a force of 40lbs. The lever measures 3 feet in length, with the pivot point positioned 1 foot from the top and 2 feet from the bottom. The lever itself weighs 2.1 lbs. Participants suggest using established physics principles to determine the speed at the bottom of the lever arm when it is at rest.

PREREQUISITES
  • Understanding of basic physics principles, particularly torque and force.
  • Familiarity with lever mechanics and equilibrium conditions.
  • Knowledge of extension spring force calculations.
  • Ability to interpret diagrams related to mechanical systems.
NEXT STEPS
  • Research torque calculations in mechanical systems.
  • Learn about the principles of static equilibrium in levers.
  • Explore extension spring force equations and applications.
  • Study the effects of weight distribution on lever speed and motion.
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Students in physics, mechanical engineers, and hobbyists interested in mechanics and lever systems will benefit from this discussion.

poopforfood
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So I have a simple lever that is connected to an extension spring. When the extension spring is exteneded it applies a force of 40lbs on the lever. The lever is 3 feet long and the pivot point is 1 foot from the top and 2 foot from the bottom. The lever weighs 2.1 lbs and has a 3lb weight attached to the bottom. Can anyone help me figure out what the speed is at the bottom of the arm. I attached a picture to this thread. The speed I need is the point when the lever is at rest as seen in the diagram.
 

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You just posted a very similar question. Use the same approach that tiny-tim suggested. Any other homework problems should be posted in the appropriate board.
 

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