Calculating the Force and Distance for Lifting a Heavy Object: A Practical Guide

  • Context: High School 
  • Thread starter Thread starter lukahn12
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SUMMARY

The discussion focuses on calculating the force required to lift one edge of a 450 lbs wall, which is positioned flat on the ground. The pivot point for the wall is 7 feet from the edge being lifted. It is established that when lifting one edge, the effective weight lifted is approximately half of the total weight, due to the pivoting action. This understanding is crucial for accurately determining the force needed for the lifting process.

PREREQUISITES
  • Basic understanding of physics principles, specifically torque and leverage.
  • Familiarity with force calculation methods, including the use of weight distribution.
  • Knowledge of mechanical advantage in lifting scenarios.
  • Experience with practical applications of physics in real-world situations.
NEXT STEPS
  • Research the principles of torque and how it affects lifting heavy objects.
  • Learn about mechanical advantage and its application in lifting devices.
  • Explore the calculations involved in determining the force required for various angles of lift.
  • Investigate safety measures and equipment for lifting heavy objects effectively.
USEFUL FOR

This discussion is beneficial for engineers, physics students, construction workers, and anyone involved in lifting heavy objects safely and effectively.

lukahn12
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Hey everyone. First post here. Sorry if this is the wrong place. Force calculation seems to fall under classic physics, though. Or to me it does. :smile:

Anyway, I have a large thing outside (block, wall, whatever you want to call it.). It is laying flat on the ground. I was wondering how I would go about calculating the required force to lift one edge of the wall up, from the ground to perpendicular to the ground, so the wall will stand.

The wall weighs about 450 lbs, and the distance from the edge I am lifting from to the edge where the wall will pivot is about 7 feet.

After I know the force required to lift the wall, I would like to calculate how much I actually lifted. 450 lbs is a nice though, but it's not happening. :P I assume lifting one edge cuts the weight lifted roughly in half, but I'd like to KNOW.

Thank you all for your time and any future help!

~The Amazing Oti
 
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Initially the ground supports half of the weight and the lifting device, at the other edge, supports the other half.
 
Thanks for the fast reply. :)

So my assumption that I'm only lifting about half the weight is correct, then?
 

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