Ch.12 Flashcards
Number that serves as an index of the interaction between two
surfaces in contact
Coefficient of friction
Number that serves as an index of elasticity for colliding bodies
Coefficient of restitution
Force acting at the area of contact between two surfaces in the direction opposite that of motion or motion tendency
Friction
Collision characterized by the exchange of a large force during a small time interval
Impact
Product of a force and the time interval over which the force acts
Impulse
Energy of motion calculated as ½ mv2
Kinetic friction
Constant magnitude friction generated between two surfaces in contact during motion
Kinetic friction
Quantity of motion, measured as the product of a body’s mass and its velocity
Linear momentum
Maximum amount of friction that can be generated between two static surfaces
Maximum static friction
Force acting perpendicular to two surfaces in contact
Normal reaction force
Impact during which the velocity of the system is conserved
Perfectly elastic impact
Impact resulting in the total loss of system velocity
Perfectly plastic impact
Energy by virtue of a body’s position or configuration, calculated as the product of weight and height
Potential energy
Rate of work production, calculated as work divided by the time during which the work was done
Power
Capacity to do work by virtue of a deformed body’s return to its
original shape
Strain energy
In a mechanical context, force multiplied by the displacement of the resistance in the direction of the force
Work
