Torque on a hinge to a gate that is 69 inches long

Thread starter ewhite17
Start date Jan 23, 2013
Tags

Gate Hinge Torque

AI Thread Summary

To lift a 69-inch gate that requires 50 lbs of force at a little over a 90-degree angle, the torque needed can be calculated using the formula torque = force x distance. Given the length of the gate, the torque required would be 50 lbs multiplied by 69 inches, which equals 3450 inch-pounds. To offset the majority of the weight, a torsion spring must provide a torque close to this value. A free body diagram would help visualize the forces acting on the gate and the spring's placement. Proper calculations and diagrams are essential for determining the exact specifications needed for the torsion spring.

Jan 23, 2013

ewhite17

I have a gate that is 69 inches long and it takes 50 lbs of force to lift at the end of the gate when it is extended at a little over a 90 degree angle. How many foot pounds of torque in a torsion spring will be needed to lift the gate or at least offset the majority of the weight?

Physics news on Phys.org

Jan 24, 2013

SteamKing

Staff Emeritus

Science Advisor

Homework Helper

Draw a free body diagram.

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...

View full post »

Thread 'Newton's first law?'

Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?

View full post »

Thread 'Beam on an inclined plane'

Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...

View full post »