Static equilibrium, machines; handheld press

In summary, the conversation discusses the use of a handheld press for tasks such as squeezing rivets or punching holes and the application of force to sheet metal. The focus is on determining the force P applied to the sheet metal at E for a 64-N force applied to the handles. The conversation also touches on the concept of mechanical advantage and the vertical movement of a cylinder DE. Further discussion centers around the relationship between the angle change and the vertical movement of D.
  • #1
J-dizzal
394
6

Homework Statement


The handheld press is useful for such tasks as squeezing rivets or punching holes. What force P is applied to the sheet metal at E for the 64-N forces applied to the handles?
20150720_225018_zpspvumd4i8.jpg

Homework Equations

The Attempt at a Solution


20150720_225004_zps2oxrnb5s.jpg

Not sure how to get this one started, i initially took the moment of the top piece but that didnt solve for anything.
 
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  • #2
I think you made a very good start with the first free body diagram. I think the key is to realize that the cylinder DE (shown as hidden lines) is free to move vertically independently.
 
  • #3
Think about mechanical advantage and movement ratios.
If the lever is moved down a small distance dx, by how much does the angle change?
If the angle changes by a small amount ##d\theta##, how far does D move down?
(Draw yourself a larger diagram of the C/D region).
 

FAQ: Static equilibrium, machines; handheld press

What is static equilibrium?

Static equilibrium is a state in which all forces acting on an object are balanced, resulting in no net change in the object's motion or position.

How is static equilibrium related to machines?

Machines are designed to achieve static equilibrium in order to perform their intended tasks efficiently. This means that the forces and torques acting on the machine must be balanced for it to function properly.

What is a handheld press and how does it work?

A handheld press is a type of machine that is operated by hand and is used to apply force to an object. It works by using a lever and fulcrum system to amplify the applied force and achieve static equilibrium.

What factors affect the static equilibrium of a handheld press?

The length of the lever arm, the position of the fulcrum, and the applied force all affect the static equilibrium of a handheld press. Changes in any of these factors can impact the efficiency and effectiveness of the press.

How can static equilibrium be used to improve the functionality of machines?

By achieving static equilibrium, machines can operate more efficiently and require less effort to perform their tasks. This can also help to prevent damage to the machine and increase its lifespan.

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