The discussion revolves around the calculation of drag and lift forces as illustrated in a provided image. Participants explore the relationship between these forces and the motion of a block in a fluid context, raising questions about the scenario depicted and the calculations presented.
Participants do not reach consensus on the number of blocks in the illustration or the specifics of the scenario. Multiple competing views remain regarding the interpretation of the problem and the calculations presented.
Participants note that the original post lacks sufficient information to clarify the scenario, which contributes to the confusion and disagreement about the forces involved.
jedishrfu said:I don't understand how is drag and lift related to a sliding block?
mymachine said:How can I find the drag and lift force such as below illustration?
http://s4.postimage.org/sxmnflttp/dragillustration.png
Below is my calculation:
http://s4.postimage.org/ao75d6r0d/dragcalculation.png
mymachine said:It's not a sliding block.
It's moving on the air.
berkeman said:Which block? There are two in the illustration. And which way is it moving? Where does this problem come from?
mymachine said:Two?
Wrong.
As you can see from the first image, the "A" is the area of the surface which its depth is 10 m.
The motion is from right to left.
The snout is at the front and the flat is at the back.
jedishrfu said:Be nice, we're trying to help and you didn't provide enough information to begin with.
mymachine said:Am I that really not so nice?
I just telling that was wrong.
No other purpose.