:Launching a Jet: Understand the Physics of a Catapult

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Homework Help Overview

The discussion revolves around the physics of launching a jet aircraft using a catapult system on an aircraft carrier. The original poster presents a problem involving the acceleration of a 2000-kg jet to a launch speed of 320 m/s over a duration of 2.0 seconds, seeking to determine the net force acting on the plane and the length of the catapult.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • The original poster attempts to apply basic physics equations related to force and motion to solve the problem. Some participants question the correctness of the equations used, particularly regarding the representation of acceleration and the calculation of force.

Discussion Status

There is a mix of agreement and disagreement among participants regarding the original poster's calculations. Some participants provide corrections to the equations used, while others affirm the original poster's solution. The discussion is ongoing, with different interpretations of the physics concepts being explored.

Contextual Notes

Participants are navigating through the application of fundamental physics principles, and there appears to be some confusion regarding the correct formulas and their application in this context.

NewJersey
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An aircraft carriers capapult accelerates a 2000-kg jet aircraft from rst to a lauch speed of 320m/s in 2.0s.

a) The net force on the plane is ?
b) the length of the catapult is ?

F= m/a Lenght= at^2/2 vf=vo*at

320m/s= (0) * a * 2.0s
a= 160 m/s

F= 2000kg * 160m/s
= 320,000 N

b at^2/2 160*4/2= 320M

Is this right








The Attempt at a Solution

 
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"F= m/a Lenght= at^2/2 vf=vo*at " ? NOT right.

F=ma.
vf=v0+at.
 
Your solution is correct.
 
ok yeah, I meant to put the + sign instead of *.
 

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