Controlled Assessment – Additional Science / Physics ISA PU2.x Friction (Specimen) For use from May 20xx to April 20xx Teachers’ Notes This ISA relates to Additional Science / Physics Unit 2: P2.1.3 Forces and braking A vehicle’s braking distance can be affected by adverse road and weather conditions and poor condition of the vehicle Overview Candidates should: • develop hypotheses and plan practical ways to test them • make risk assessments and manage risks when carrying out practical
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Metall Schmiedetechnik Always One Gear Ahead Synchronizer rings · Precision parts for the automotive industry Metall THE CHALLENGES Economic growth and progress depend on mobility. By the year 2025‚ almost eight billion people will live on our planet. Every day‚ more and more people and goods are transported across ever increasing distances. The world is growing together but is also growing bigger. This calls for people and companies who are willing and able to take on these challenges
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CHAPTER 5 MATERIALS HANDLING METHODS ______________________________________________________ 1. Introduction Material Handling is the movement‚ storage‚ control and protection of materials‚ goods and products throughout the process of manufacturing‚ distribution‚ consumption and disposal. The focus is on the methods‚ mechanical equipment‚ systems and related controls used to achieve these functions. The material handling industry manufactures and distributes the equipment and services required
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PDHonline Course C155 (2 PDH) Earth Pressure and Retaining Wall Basics for Non-Geotechnical Engineers Instructor: Richard P. Weber‚ P.E. 2012 PDH Online | PDH Center 5272 Meadow Estates Drive Fairfax‚ VA 22030-6658 Phone & Fax: 703-988-0088 www.PDHonline.org www.PDHcenter.com An Approved Continuing Education Provider www.PDHcenter.com PDH Course C155 www.PDHonline.org Earth Pressure and Retaining Wall Basics for Non-Geotechnical Engineers Richard P. Weber Course Content
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Open ended experiment: Head loss due to friction and pipe fitting in round smooth pipe Introduction To verify that Darcy – Weisbach equation can be used to predict the head loss due to friction with of water through a smooth bore pipe. Apparatus HF 135 Piping Loss Test Set. Summary of theory For water flowing through a circular pipe‚ the head loss due to the friction can be calculated using Darcy – Weisbach equation. H = Where: L = length of pipe between tapping (m) = 1.25m for all pipe
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The Big 50 Revision Guidelines ‐ M1 OPHS The Big 50 Revision Guidelines for M1 If you can understand all of these you’ll do very well… 1. Understand what is meant by a Model in Mechanics‚ and why all real‐life systems have to be modelled in order to be analysed theoretically 2. Know how everyday objects are modelled as Particle‚ Lamina‚ Rigid Body‚ Rod (Light‚ Uniform‚ Non‐ uniform)‚ String (Light‚ Inextensible)‚ Pulley (Light‚ Smooth)‚ Surface (Rough‚ Smooth)‚ Bead‚ Wire and Peg
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References: [1] Mihai Anitescu and Florian A. Potra. Formulating dynamic multi-rigid-body contact problems with friction as solvable linear complementarity problems. Nonlinear Dynamics‚ 14:231–247‚ 1997. [2] David Baraff. Fast contact force computation for nonpenetrating rigid bodies. In Proceedings of SIGGRAPH 1994‚ pages 23–34‚ 1994. [3] J. Baumgarte. Stabilization
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A hard rubber ball is dropped from rest. It falls to the concrete floor and bounces back up ALMOST to its initial height. A motion detector is mounted on the ceiling directly above the ball‚ facing down. So‚ the positive direction -- the away-from-the-detector direction -- is downward. Draw the position‚ velocity‚ and acceleration graphs. Since moving downward is a positive direction‚ is the velocity positive when the ball falls‚ 0 when it hits the ground‚ and then negative when it moves up?
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Laboratory V: Conservation of Momentum Problem #1: Perfectly Inelastic Collisions John Greavu April 17‚ 2013 Physics 1301W‚ Professor: Evan Frodermann‚ TA: Mark Pepin Abstract A cart was given an initial velocity toward another stationary cart down a track. The initial velocity of the first cart as well as the masses of both carts was varied throughout multiple trials. Velcro placed on the ends of the carts caused the cars to stick together after colliding. Videos of the collision and the seconds
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progressive structuring of cubical shaped‚ fine‚ particles is clearly shown in these two enlarged views of the attrition zone. Finely crushed particles are discharged at perimeter of attrition chamber. 2. The attrition resulting from the high surface friction during forceful relocation of the particles into smaller voids within the feed mass. In the Gyradisc crusher‚ the combination of impact and attrition offers the most efficient power utilization as compared to other fine crushing or reduction methods
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