# Rocket ISU

Topics: Rocket, Force, Newton's laws of motion Pages: 17 (4013 words) Published: December 3, 2013
﻿Rocket ISU Lab Report

Abstract
What are rockets? How did they come to our existence? What are the main principles behind rockets? What is the history of rockets? How is the mass of the rocket related to its Fnet, Acceleration, Max Height, etc. This lab report gives a brief explanation of the physics behind this innovative man-made invention. This lab goes through the basic principles of rocketry. The lab explores how rockets became more sophisticated over the years. This report discusses about the things to keep in mind while building a small and simple rocket. This report is the best example for a person who is interested in the field of rocketry. Table of Contents

Title Page1
Principles of Rocketry3
Rocket Design Strategy..7
Purpose9
Materials9
Observations ..............................................................................................................................................10 Calculations Trial #1.................................................................................................................................11 Calculations Trial #2.................................................................................................................................14 Error Analysis............................................................................................................................................17 Conclusion...................................................................................................................................................19 Bibliography................................................................................................................................................20

Principles of Rocketry
Back in the day when people saw birds flying in the air, they probably could not even imagine their joy. However, today, even an infant can fully live by the virtue of advances in aeronautics, man has disproved that sky is the limit. Rockets and spaceships have helped him to redefine the concept of flying. In today’s world, the concept of rockets exists because of Sir Isaac Newton, a pioneer in the field of physics whose three laws of motion enabled scientists in today’s date to build rockets accurately. In simple words, a rocket is a chamber enclosing a gas under pressure. A balloon is a most common example.

Newton’s first law states that, objects at rest will remain at rest and objects in motion will remain in motion in a straight line unless acted upon by an unbalanced force. To begin with, when the rocket is at rest all the forces are equal. The force of gravity on the rocket equals with that of the pad that is holding on it. While in motion, the rocket unbalances the forces and as a result, it travels upward. Newton’s second law states that, force equals mass times acceleration. The mass of the rocket changes during the flight, since the engine’s energy is being used up rapidly so the rocket weighs less and accelerates. The third law states that, every action has an equal and opposite reaction. As the rocket takes off and releases the gas out, the gas pushes the rocket upwards. The design of the rocket also plays an important role. To begin with, inertia, the tendency of an object to resist change while in motion is directly connected to the mass of the object. A heavier rocket will have more inertia, because it has more mass. This will in turn give the rocket more resistance. The rocket will be therefore able to surpass the wind. On the other hand, a lighter rocket will have less inertia since the mass of the rocket is less. As a result, rocket will have less resistance and the effect of the wind on the rocket will be great. Another factor that is associated with the design of the rocket is the center of the mass. The center of the object is the exact point where all of the mass of the rocket is exactly balanced. Everything is made up of matter, regardless...

Bibliography: Bellis, Â. (n.d.). Timeline of Space Shuttle. Inventors. Retrieved December 13, 2012, from http://inventors.about.com/od/rstartinventions/a/Astronauts_3.htm
Category. (n.d.). The History of Rockets - The First True Scientists. Inventors. Retrieved December 16, 2012, from http://inventors.about.com/library/inventors/blrockethistory1.htm
Benson, T. (2010). Retrieved December 16, 2012, from http://www.grc.nasa.gov/WWW/k-12/TRC/Rockets/history_of_rockets.html
Hirsch, A. J. (2002). Nelson physics 11. Toronto: Nelson Thomson Learning.