Motion With A Resistive Force

Motion With A Resistive Force - Resistive force and small...

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Unformatted text preview: Resistive force and small quantities This summary of the mathematics will supplement what was covered in class. It gives you the background for questions 3 and, particularly, 4 on Assignment 3. However, you do not need the details of the math to do these two problems! The idea is to figure out the time-of-flight and the range of a projectile when there is a resistive force (drag). In particular we will look at how to simplify things using the fact that the resistive force is small compared to the force of gravity. It is important that the vertical and horizontal motions can be treated independently. So, to determine the time-of-flight, we will consider just the vertical motion: throwing an object vertically into the air, and asking for the velocity and position as a function of time. To be concrete, we will ask how long it takes for an object to return to its starting point if it is thrown upwards with velocity v . When there is no resistive force, this time is T = 2 v /g ....
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This note was uploaded on 04/29/2008 for the course PHYS 230 taught by Professor Harris during the Fall '07 term at McGill.

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Motion With A Resistive Force - Resistive force and small...

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