How Do You Calculate the Force Needed to Turn a Handle in a Pulley System?

In summary, if you have a simple pulley system with a mass on one side and a turning handle on the other, you can calculate the tension in the pulley. However, to determine the force required to turn the handle and move the mass, you will need to do a moment balance calculation around the center of the handle. This force will need to be greater than the force required to keep the handle in place. Additionally, you will need force (Newtons) to lift the mass and torque (Newton-meters) to turn the handle."
  • #1
MischaHam
1
0
i have a simple pulley with a mass a one side and turning handle at the other. i can calculate the tension in the pulley but i am not sure how to calculate the force required to turn the handle and move the mass, or is this simply just equal to the tension in the system?
 
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  • #2
Assuming your turning handle looks like this:
http://www.midcurrent.com/news/images/Cranky%20winding%20high%20res.jpg

To calculate the force required to keep the handle in place (F_0), do a moment balance calculation about the center of the turning handle. (summation of moments = zero). To move the mass, the force applied will thus have to be greater than F_0.
 
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  • #3
You need force (Newtons) to lift the mass. You need torque (Newton-meters) to turn the handle.

Bob S
 

Related to How Do You Calculate the Force Needed to Turn a Handle in a Pulley System?

What is a pulley system with handle?

A pulley system with handle is a mechanism that uses a combination of wheels and ropes or cables to lift, lower, or move objects. The handle allows for manual operation of the pulley system.

How does a pulley system with handle work?

The pulley system works by distributing weight evenly between multiple wheels and ropes, allowing for easier lifting or movement of heavy objects. The handle is used to control the direction and speed of the pulley system.

What are the advantages of using a pulley system with handle?

The main advantage of using a pulley system with handle is that it reduces the amount of force needed to lift or move heavy objects. It also allows for more precise control and direction of the movement.

Where are pulley systems with handle commonly used?

Pulley systems with handle are commonly used in various industries such as construction, transportation, and manufacturing. They are also commonly used in recreational activities such as rock climbing and sailing.

Are there different types of pulley systems with handle?

Yes, there are different types of pulley systems with handle, including single pulley systems, double pulley systems, and compound pulley systems. Each type has its own unique advantages and uses.

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