Class Notes
... Without friction, car tires could not provide the traction needed to move a car or brakes could not stop it ! Surfaces that appear to be highly polished can actually look quite rough at the atomic level. ...
... Without friction, car tires could not provide the traction needed to move a car or brakes could not stop it ! Surfaces that appear to be highly polished can actually look quite rough at the atomic level. ...
Science Unit 1 Test Study Guide
... Pushes and pulls that result from direct touching of objects are called? a. contact forces b. non-contact forces ...
... Pushes and pulls that result from direct touching of objects are called? a. contact forces b. non-contact forces ...
Circular Motion
... Let’s break down the term “tangential speed” Root word “Tangent” a straight line (LINEAR) or plane that touches a curve or curved surface at a point but does not intersect it at that point 2nd word “Speed” d / t For a constant tangential speed: v = tangential speed, m/s ...
... Let’s break down the term “tangential speed” Root word “Tangent” a straight line (LINEAR) or plane that touches a curve or curved surface at a point but does not intersect it at that point 2nd word “Speed” d / t For a constant tangential speed: v = tangential speed, m/s ...
3. forces
... from the body in the direction of the cable/rope - if the weight of the rope/cable can be neglected, the rope/cable can be considered as straight and the tension along its length as constant force; otherwise, the cable will sag and the tension will vary along its length (for now, we will assume that ...
... from the body in the direction of the cable/rope - if the weight of the rope/cable can be neglected, the rope/cable can be considered as straight and the tension along its length as constant force; otherwise, the cable will sag and the tension will vary along its length (for now, we will assume that ...
Lecture Notes for Assignments #1 and 2
... (Webster’s Collegiate Dictionary) – Resistance to relative motion between two bodies in contact (MICLIMB) – A force that works against motion (Sophomore-level engineering handbook) – Tangential forces which develop when one attempts to move two surfaces that are in contact with respect to each other ...
... (Webster’s Collegiate Dictionary) – Resistance to relative motion between two bodies in contact (MICLIMB) – A force that works against motion (Sophomore-level engineering handbook) – Tangential forces which develop when one attempts to move two surfaces that are in contact with respect to each other ...
Chapter 6 - SFSU Physics & Astronomy
... starting to move when a force is applied. The static frictional force has a maximum value, but may take on any value from zero to the maximum, depending on what is needed to keep the sum of forces zero. ...
... starting to move when a force is applied. The static frictional force has a maximum value, but may take on any value from zero to the maximum, depending on what is needed to keep the sum of forces zero. ...
EN010 104 Engineering Mechanics
... Friction – Laws of friction – Contact friction problems – ladder friction – Wedge friction – Screw friction. Introduction to Structural Mechanics – Types of Supports, loads, frames – Static Indeterminacy – Support reactions of beams – Analysis of perfect trusses by method of joints, method of sectio ...
... Friction – Laws of friction – Contact friction problems – ladder friction – Wedge friction – Screw friction. Introduction to Structural Mechanics – Types of Supports, loads, frames – Static Indeterminacy – Support reactions of beams – Analysis of perfect trusses by method of joints, method of sectio ...
ROLLING MOTION AND CONSTRAINTS
... motion of a system connected by strings or cables that pass over a pulley are examples of constrained motion. For a system with a pivot, the linear and rotational motions are related by the PERPENDICULAR distance, r, from an axis passing through the pivot. For circular motion, r is the radius of the ...
... motion of a system connected by strings or cables that pass over a pulley are examples of constrained motion. For a system with a pivot, the linear and rotational motions are related by the PERPENDICULAR distance, r, from an axis passing through the pivot. For circular motion, r is the radius of the ...
Example2-CQZ2
... Only the official formula sheet downloaded from the course web page can be used. You are allowed to write notes on the back of the formula sheet. Use the scantron forms (pencil only!) for the multiple choice problems. Circle the ansers on the examination sheet as well, and return it together with th ...
... Only the official formula sheet downloaded from the course web page can be used. You are allowed to write notes on the back of the formula sheet. Use the scantron forms (pencil only!) for the multiple choice problems. Circle the ansers on the examination sheet as well, and return it together with th ...
Name
... Example 4.14: A block of mass 5.00 kg rides on top of a second block of mass 10.0 kg. A person attaches a string to the bottom block and pulls the system horizontally across a frictionless surface, as in the diagram. Friction between the two blocks keeps the 5.00 kg block from slipping off. If the c ...
... Example 4.14: A block of mass 5.00 kg rides on top of a second block of mass 10.0 kg. A person attaches a string to the bottom block and pulls the system horizontally across a frictionless surface, as in the diagram. Friction between the two blocks keeps the 5.00 kg block from slipping off. If the c ...
Contact forces
... Forces are usually divided into two types. 1. Contact forces occur because of physical contact between objects. Examples: pushing open a door pulling on a rope ...
... Forces are usually divided into two types. 1. Contact forces occur because of physical contact between objects. Examples: pushing open a door pulling on a rope ...
Frictional forces
... crate without moving it? (b) If you continue to exert this force once the crate starts to slip, what will its acceleration then be? ...
... crate without moving it? (b) If you continue to exert this force once the crate starts to slip, what will its acceleration then be? ...
Frictional contact mechanics
Contact mechanics is the study of the deformation of solids that touch each other at one or more points. This can be divided into compressive and adhesive forces in the direction perpendicular to the interface, and frictional forces in the tangential direction. Frictional contact mechanics is the study of the deformation of bodies in the presence of frictional effects, whereas frictionless contact mechanics assumes the absence of such effects.Frictional contact mechanics is concerned with a large range of different scales. At the macroscopic scale, it is applied for the investigation of the motion of contacting bodies (see Contact dynamics). For instance the bouncing of a rubber ball on a surface depends on the frictional interaction at the contact interface. Here the total force versus indentation and lateral displacement are of main concern. At the intermediate scale, one is interested in the local stresses, strains and deformations of the contacting bodies in and near the contact area. For instance to derive or validate contact models at the macroscopic scale, or to investigate wear and damage of the contacting bodies’ surfaces. Application areas of this scale are tire-pavement interaction, railway wheel-rail interaction, roller bearing analysis, etc. Finally, at the microscopic and nano-scales, contact mechanics is used to increase our understanding of tribological systems, e.g. investigate the origin of friction, and for the engineering of advanced devices like atomic force microscopes and MEMS devices.This page is mainly concerned with the second scale: getting basic insight in the stresses and deformations in and near the contact patch, without paying too much attention to the detailed mechanisms by which they come about.