PPT-Gears – Angular Velocity Ratio

Source Kinematic analysis and synthesis of mechanisms by Mallik Ghosh and Dittrich Constant Angular Velocity Ratio Source Kinematic analysis and synthesis of mechanisms by Mallik. Be able to identify phases of movement infer sources of propulsion and braking Be able to use the laws of constant angular accel Grasp the applications to human movement Questions to Think About Why would tight calf muscles restrict the ability to Nanotechnology Simple Machines. Gears, Pulleys, & Sprockets. These three power train elements transfer energy through rotary motion. . Change the speed of rotation. Change the direction of rotation. Gear Trains. Chain-Sprocket systems. Worm and Worm-gear Systems. Friction-Gear (toothless)Systems. Belt and Pulley Systems. P 115. Gear Trains. : two or more toothed gears that mesh with each other; . rads. ). angular velocity (. rad/s. ). angular acceleration (rad/s. 2. ). Recall that centripetal acceleration is expressed in terms of tangential velocity as: . a. r. = v. 2. /r. How is it expressed in terms of angular velocity . Gears, Pulleys, & Sprockets. These three power train elements transfer energy through rotary motion. . Change the speed of rotation. Change the direction of rotation. Change the amount of torque available to do work . Rotational Kinematics. Axis of Rotation . When an object rotates, points on the object, such as . A. , . B. , or . C. , move on circular paths. The centers of the circles form a line that is the axis of rotation.. Dr. Mohammad Kilani. Class 8. GEAR TRAINS. Introduction. A gear train is any collection of two or more meshing gears. . Gear trains are found in automobiles, automated machines and numerous other applications. © 2012 Project Lead The Way, Inc.. Principles of Engineering. Gears, Pulleys, & Sprockets. These three power train elements transfer energy through rotary motion. . Change the speed of rotation. Circular Motion and Linear Analogues. Recap. Yesterday, we verified that the circumference of a circle is the distance travelled in one rotation. That means: . We can extend this new knowledge to anything moving in a circle. The distance travelled in one rotation around the axis is equal to the circumference of the path taken…. © 2012 Project Lead The Way, Inc.. Principles of Engineering. Gears, Pulleys, & Sprockets. These three power train elements transfer energy through rotary motion. . Change the speed of rotation. © 2012 Project Lead The Way, Inc.. Principles of Engineering. Gears, Pulleys, & Sprockets. These three power train elements transfer energy through rotary motion. . Change the speed of rotation. Equations: . Angular displacement . ɵ = ɵ final - ɵ initial . ɵ = arc length (s) / r . 2. п. = 1 full revolution . 2. п. r = circumference . Angular velocity . ᾠ. = ɵ / t . Angular Acceleration . Rate of change of angular momentum.. Gyroscopic Couple.. Gyroscopic Couple effect in a ship.. Gyroscopic effect in a aero plane.. Angular momentum (L). Angular momentum . (L):. . If a circular disc rotating about an axis passing through center of disc and perpendicular to circular plane.. Gears. A gear is a simple machine like a lever. The larger the diameter of the gear the longer the lever. What are Gears used for?. Ensure positive motion. Reverse the direction of rotation. Increase or decrease the speed of rotation.