Simple Machines
= Force x Distance
What is Work
Term for energy sources that cannot be replaced once used.
What is non-renewable?
This measurement is the average kinetic energy of particles in an object.
What is temperature?
The two variables in the denominator of the formula for calculating the deflection of a beam with given length and applied force.
What are modulus of elasticity (E) and moment of inertia (I)?
A basic shape that retains its shape while under a force.
What is a triangle?
The six simple machines.
What are lever, wheel & axle, pulley, inclined plane, wedge, screw
Electricity is generated when a conductor is moved through this type of field.
What is a magnetic field?
The reading on your Celsius thermometer when your friend thermometer reads 273K.
What is zero?
Three formulas that define static equilibrium, on a bridge truss for example.
What are sums of Fx=0, Fy=0, and M=0?
To be statically determinate, a structure's number of Members and Reaction Forces must equal this.
What is 2J (two times the number of joints)?
The ratio AMA / IMA.
What is efficiency?
This describes a material where electrons flow easily between atoms (not to be confused with the leader of a big band)
What is a conductor?
The three types of thermal energy transfer.
What are convection, conduction, and radiation?
The SI unit for Force.
What is a Newton?
As a first step in solving a truss, we solve for the reaction force at the roller by putting the pivot point at the pin and using this formula.
What is the sum of moments = zero?
When the sum of all moments on a lever equals 0.
What is rotational equilibrium?
This electrical measurement is taken by breaking a piece of the circuit before placing the multimeter probes.
What is the current?
According to the 2nd Law of Thermodynamics, it's the direction of thermal energy flow.
What is from hot to cold?
The clock direction of rotation when the Moment is positive, by convention.
What is counter-clockwise (CCW)?
When solving for reaction forces, we must not forget to include these forces and their distances in our calculations.
What are external forces?
The # of strands opposing the force of the load.
What is the IMA of a (block & tackle) pulley?
Circuit components that are parallel to one another will have this measurement in common.
What is voltage?
The amount of thermal energy transferred depends on (1) the mass of the material, (2) the specific heat capacity of the material, and (3) ...
What is change in temperature?
The number of Reaction Forces on a pin support of a truss.
What is 2 (Rx and Ry)?
When solving for the forces within truss members, the direction of the arrows on each member will indicate whether the member is in __________ or _________ .
What are tension and compression?