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Homework Help: physics

Posted by sandhu on Monday, November 29, 2010 at 8:40am.

Posted by sandhu on Sunday, November 28, 2010 at 10:03pm.


A 7200 lb airplane lands on an aircraft carrier with a speed of 72 ft/s. The plane is caught by an elastic band (k=998 lb/ft) that has an initial stretch of 5.6 feet. What is the maximum distance the band is stretched?



Physics - drwls, Monday, November 29, 2010 at 3:08am
(1/2)MV^2 = (1/2)k X^2

Solve for X

The mass M of the airplane must be in slugs when using this formula, since ft and lb are used for distance and force. 7200 lb weight = 223.6 slugs



Physics - sandhu, Monday, November 29, 2010 at 7:30am
It is a timely help.Thanks



Physics - sandhu, Monday, November 29, 2010 at 8:39am
Should the initial stretch of 5.6 ft be added to X to find the maximum distance the band is stretched?

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