Homework Help: An airplane's lift

1. Jan 16, 2007

kitty9035

1. The problem statement, all variables and given/known data
What is the net upward force on an airplane wing of area 20 m2 if the speed of air flow is 300 m/s across the top and 280 m/s across the bottom.

2. Relevant equations

3. The attempt at a solution

I have a feeling that this is an easy question, but i just don't know how to solve it!! Any hints would be greatly appreciated.

2. Jan 16, 2007

AlephZero

Hint: there is a lift force is because the pressure on the top and bottom surfaces of the wing are different.

What equations do you know that relate pressure in a fluid to the speed of flow?

3. Nov 29, 2007

sephirothrr

So that would be Bernoulli's equation, right?
But how would you use that in this case?
{"extraction_info": {"found_math": false, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 0, "mathjax_tag": 0, "mathjax_inline_tex": 0, "mathjax_display_tex": 0, "mathjax_asciimath": 0, "img_math": 0, "codecogs_latex": 0, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0, "math_score": 0.8027800917625427, "perplexity": 329.05628915229784}, "config": {"markdown_headings": false, "markdown_code": true, "boilerplate_config": {"ratio_threshold": 0.18, "absolute_threshold": 10, "end_threshold": 15, "enable": true}, "remove_buttons": true, "remove_image_figures": true, "remove_link_clusters": true, "table_config": {"min_rows": 2, "min_cols": 3, "format": "plain"}, "remove_chinese": true, "remove_edit_buttons": true, "extract_latex": true}, "warc_path": "s3://commoncrawl/crawl-data/CC-MAIN-2018-22/segments/1526794865651.2/warc/CC-MAIN-20180523121803-20180523141803-00638.warc.gz"}