MASSACHUSETTS INSTITUTE OF TECHNOLOGY
... A bowling ball of mass m and radius R is initially thrown down an alley with an initial speed v0 and backspin with angular speed 0 , such that v0 R 0 . The moment of inertia of the ball about its center of mass is Icm (2 / 5)mR2 . Your goal is to determine the speed vf of the bowling ball wh ...
... A bowling ball of mass m and radius R is initially thrown down an alley with an initial speed v0 and backspin with angular speed 0 , such that v0 R 0 . The moment of inertia of the ball about its center of mass is Icm (2 / 5)mR2 . Your goal is to determine the speed vf of the bowling ball wh ...
Friction
... • When an object rolls over a surface, a frictional force due to rolling friction slows the object down • Weakest frictional force • Much less than sliding or static friction, which is why it is easier to move a heavy object if it is on wheels ...
... • When an object rolls over a surface, a frictional force due to rolling friction slows the object down • Weakest frictional force • Much less than sliding or static friction, which is why it is easier to move a heavy object if it is on wheels ...
Slides - Nuffield Foundation
... Think about What forces are acting on the package? Vertical forces: ...
... Think about What forces are acting on the package? Vertical forces: ...
Contact forces - Uplift Education
... 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 ...
Newton`s Laws - Ccphysics.us
... horizontally. If the two-block system accelerates at 0.5 m/s 2 what is the tension in the connecting string between the blocks? a. 14 N c. 10 N b. 6 N d. 4.0 N ____ 22. Two blocks of masses 20 kg and 8.0 kg are connected together by a light string and rest on a frictionless level surface. Attached t ...
... horizontally. If the two-block system accelerates at 0.5 m/s 2 what is the tension in the connecting string between the blocks? a. 14 N c. 10 N b. 6 N d. 4.0 N ____ 22. Two blocks of masses 20 kg and 8.0 kg are connected together by a light string and rest on a frictionless level surface. Attached t ...
Chapter 1 Quick Review
... 2. Two blocks (A and B) are in contact on a horizontal frictionless surface. A 36-N constant force is applied to A as shown. The magnitude of the force of A on B is: (Contact Force) a. 1.5 N b. 6.0 N c. 29 N d. 30 N e. 36 N 3. A 1-N pendulum bob is held at an angle θ from the vertical by a 2-N horiz ...
... 2. Two blocks (A and B) are in contact on a horizontal frictionless surface. A 36-N constant force is applied to A as shown. The magnitude of the force of A on B is: (Contact Force) a. 1.5 N b. 6.0 N c. 29 N d. 30 N e. 36 N 3. A 1-N pendulum bob is held at an angle θ from the vertical by a 2-N horiz ...
1 Units of Force Gravitational Force Applications of Newton`s Law
... Solve for the unknown(s) If T is constant, then a is constant and the kinematic equations can be used to more fully describe the motion of the crate ...
... Solve for the unknown(s) If T is constant, then a is constant and the kinematic equations can be used to more fully describe the motion of the crate ...
Review - Liberty High School
... the rotating object is changing, or the forces on the rotating object are changing. If the speed changes, there is a tangential as well as a centripetal component to the force. In some cases, the magnitude of the centripetal force changes as the circular motion occurs. ...
... the rotating object is changing, or the forces on the rotating object are changing. If the speed changes, there is a tangential as well as a centripetal component to the force. In some cases, the magnitude of the centripetal force changes as the circular motion occurs. ...
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.