ENG1001 Lecture Notes - Lecture 9: Buoyancy, Friction, Damping Ratio

• School: Monash University
• Department: Engineering
• Course: ENG1001
• Professor: All Professors

Document Summary

A particle originally at rest, or moving in a straight line with constant velocity, will remain in this state provided the particle is not subjected to an unbalanced force. A particle acted upon by an unbalanced force f experiences an acceleration a that has: The mutual forces of action and reaction between two particles are equal, opposite and collinear. Forces to consider (except gravity, will be told if need to include a force) When a mass is placed on a surface, it exerts a force normal to the surface, pushing the mass outward from the surface. = spring coefficient * displacement (direction of disp impt!) Thermal forces - energy frm heat >> ke (eg. steam turbines) Buoyancy forces - exists due to combined effects of gravity and diff densities of substances. Chemical bonds quickly form due to contact between any two surfaces. Creating and destroying these chemical bonds take energy from ke of sliding motion.