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Type: Posts; User: oilmanjr

1. ## Thread: Force Required to Lift Door

by oilmanjr
Replies
9
Views
4,231

### Since the weight of the door is 4 kips and the...

Since the weight of the door is 4 kips and the Rby that you found for both situations was 2 kips is it safe to assume that the force required to lift is always 1/2*W? Or will this change depending...
2. ## Thread: Force Required to Lift Door

by oilmanjr
Replies
9
Views
4,231

### Yes I misunderstood what you were saying. The Rby...

Yes I misunderstood what you were saying. The Rby is what I'm looking for (it is denoted as "L" in my diagram).

It is my understanding that we are looking at this entire system in equilibrium, so...
3. ## Thread: Force Required to Lift Door

by oilmanjr
Replies
9
Views
4,231

### There would not be a Rby since it is a roller,...

There would not be a Rby since it is a roller, not a hinged connection. I just used resultant forces for the weight of each section of the door to simplify things. Ultimately I am looking for the...
4. ## Thread: Force Required to Lift Door

by oilmanjr
Replies
9
Views
4,231

### I have attached a picture of what I have...

I have attached a picture of what I have completed. I am still unsure how to calculate the hp and torque required to lift the door. If anyone has any assistance they could give I would greatly...
5. ## Thread: Force Required to Lift Door

by oilmanjr
Replies
9
Views
4,231

### Force Required to Lift Door

I have a relatively simple mechanics problem that I am stuck on at work. I need to calculate the force required to lift a bifold door using lift cables.

Background:

Bifold doors are a type of...
6. ## Thread: Force Required to Lift Door

by oilmanjr
Replies
0
Views
932

### Force Required to Lift Door

I have a relatively simple mechanics problem that I am stuck on at work. I need to calculate the force required to lift a bifold door using lift cables.

Background:

Bifold doors are a type of...
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