Mechanics Flashcards
Physics branch that deals with energies of matter
Mechanics
Describe state of object or a system
Unit J joules
1 J = 1 kgm²/s²
Energy
Potential energy + Kinetic energy
Mechanical energy
Microscopic mechanical energy
Energy of particles in object
Thermal energy
Energy from movement of charged particles
Electric energy
Energy of EM radiation and light
Radiant energy
Energy by vibration of air thru a medium
Sound energy
Energy of motion of an object
Kinetic energy
Stored energy due to the position of object with respect to gravity
Potential energy
Stored energy due to elasticity
Elastic potential energy
Universal Law of Energy
Energy can neither be created nor destroyed. It can only be transformed from one form to another
Delta ME = delta KEtotal + Delta PEtotal
If ME not equal to zero
Work done was to change the energy
Force causing movement or displacement
Unit J joules
1 J = 1 Nm
Delta ME = delta KEtotal+ dekta PEtotal = W
Work by force -> W = Fd
Effect of Work on Energy->delta E = W
Work
Recieve input amt of work and transfer energy to output amt of work
Make work easier
Used to alter the influence of a force
Lever
Wheel and Axel
Pulley
Ramp
Wedge
Screw
Machines
Recieve input amt of work and transfer energy to output amt of work
Make work easier
Used to alter the influence of a force
Machines
