Mechanical Forces Flashcards
First Law of Thermodynamics
In a closed system, energy can neither be created nor destroyed, only transformed or transferred
Law of Conservation of Mass
Matter cannot be created or destroyed; it can only change forms
Law of Conservation of Momentum
Changes of momentum in a closed system must be equal
The scientific study of motion
Mechanics
Energy of Motion
Mechanical Energy
The ability to perform work
Energy
Laws put in place by God to govern how things work in the universe
Physical Law
Energy that is being stored
Potential Energy
Energy that is being used
Kinetic Energy
Law of conservation of Energy
Energy cannot be created or destroyed; only change forms
Movement due to mass and velocity in a particular direction
Momentum
A push or pull
Force
A continuous pull on an object
Tension
Force exerted by liquids and gases equal to mass of displaced fluids
Buoyancy
Sum of all the forces exerted on an object
Net Force
The amount of tension a material can withstand
Tensile strength
Hooke’s Law
A spring stretches or compresses proportional to the force applied
Force that resists movement
Friction
Substance that reduces friction
Lubricant
Changes in position due to an applied force
Work
Rate at which work is done
Power
What is Mechanical Force?
The energy that is possessed by an object due to its motion or due to its position
