Pulley
When was the first pulley created?
1991- 1802 BC
A rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other?
Lever
What's another name for inclined plane?
Ramp
What are five uses of inclined planes?
Ramps, Stairs, Slides, Anthills, Slanted roofs, Escalators
What were the names of Rube Goldberg's Granddaughter's names?
Linda & Jennifer
What are two pulley's together called?
Block& Tackle
Define Gears
Wheels with teeth that fit together
Define inclined plane
A flat supporting surface tilted at an angle from the vertical direction, with one end higher than the other, used as an aid for raising or lowering a load.
What is a modern form of a catapult?
Sling shot
Where is Goldberg from?
San Francisco
What Greek mathematician invented the pulley system?
Archimedes
The first Wheel& Axle was created in Mesopotamia where is that in present day?
Iraq
What use did the incline plane serve Galileo?
To study the motion of objects is one of his most important contributions to science.
Which simple machine is the most useful.
Wheel & Axle
What are the five things Rube Goldberg was known as?
Cartoonist, Sculptor, Author, Engineer, and Inventor.
Which one was created first the Hammer or the Pulley
Hammer
A wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used to raise heavy weights?
Pulley
A plank or plane surface put at an angle to a horizontal surface?
inclined plane
A Crowbar is a type of lever, what was its original name?
Iron Crow
What were Rube's college degree and first job
engineering
In blank pulleys are affixed to shafts at their axes, and power is transmitted between the shafts by means of endless belts running over the pulleys.
belt drives
What is the difference between fulcrum and friction?
Friction is the force that slows objects down when they rub against each other and Fulcrum is the point where a lever rests.
How many types of inclined planes are there.
Three
Who was the first scientist to use an inclined plane?
Galileo
Rube's art was known as?
Cartoons