PP111 Lecture : 21.09.12.docx

39 views3 pages

whitehornet938

10 Dec 2012

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Constancy and flux (how is it that things seem to be constant but also always changing) At the beginning of philosophy (socratic period) we see a reliance on reason, the emerging of science. And at this time two types of philosophists emerge. Materialists and idealists, materialists believe that everything exists of matter and composed of the four elements (fire, wind, earth water) it is based off of experience (experiential). After one day at sea he replaces one small part of the ship, and every day he does this for his whole journey. By the time he gets to his destination all parts have been changed. Yes: some changes an object undergo are so small or insignificant that they don"t prevent it from being the same object after it changes: make the daily changes that small or insignificant. Since its such a small change ship day 1= ship day 2, ship day 2= ship day 3 etc

Related Questions

MAC, Inc. (the company you work for) has decided to move forwardwith a feasibility
study for a product it wishes to manufacture and sell. This productis a particle launcher that should have the capability, for everyactivation, of launching two particles into the air at twodifferent times and at two different angles of elevation, in anautomated fashion so that they both land at the same distance fromthe launch point at the same time. For example, let P1 and P2 betwo particles, let T1 and T2 be two times, and let theta1 andtheta2 be two angles of elevation. Once activated, the launchershould be able to operate so that particle P1 is launched at timeT1 with an angle of elevation theta 1, and particle P2 islaunched
at time T2 with an angle of elevation theta2.
The launcher must be configured by a technician, prior to eachactivation, so that the
initial speed is set for the launcher, and the distance from thelauncher to where both
particles will land is set. For each activation of the launcher,the initial speed will be the
same for both particles. Once the technician has set the initialspeed and desired distance,
the launcher must calculate the angles of elevation to use and howmuch time to wait in
between particle launches. Then, when the technician activates thelauncher, both
particles will be launched at the appropriate angles of elevationand at the appropriate
times so that they both land at the configured distance from thelauncher at the same time.
The launcher, based on its calculations, will change the angle ofelevation to be ready for
the second particle launch. The launcher, however, must flash awarning for the
technician if the information the technician used to configure thelauncher does not result
in a two-particle launching solution.
Certain assumptions must be made. It is assumed that that launchercan always change
the angle of elevation to get ready for the second particle launchfaster than the time
delay calculated for the second particle launch. It is assumed thatthe units for speed are
meters per second, that the units for distance are meters, and thatgravity is 9.8 meters per
second squared. It is assumed that gravity is the only force actingon the motion of the
particles after launch, and that there is no wind to be considered,so that the particles land
at a point exactly in line with the direction the launcher ispointed.
The questions that must be answered and written up in anengineering report are as
follows:
1. Given the initial speed and desired landing distance for theparticles, find the
mathematical expressions that must be used to find 1, 2, and thetime delay
between particle launches.
2. Determine under which conditions the launcher will not be ableto perform the
operation requested, and will consequently flash a warning to thetechnician.
3. Each particle launched will follow a path of motion that isparabolic. Show that
the vertex of the parabola for each particleâs path occurs at thesame distance from
the launcher.
4. Along the path of each launched particle, there will be amaximum curvature.
Find that maximum curvature for each launched particle.

PP111 Lecture : 21.09.12.docx

Document Summary

Get access

Related Documents

PP111 Lecture Notes - Lecture 2: Materialism, Atomism, Melissus Of Samos

PP111 Lecture Notes - Melissus Of Samos, Atomism, Materialism

PP111 Study Guide - Incorporeality, Monism, Cockroach

Related Questions