A
Force
a push or pull that causes an object to move, stop, or change direction
Mechanical Advantage
The amount by which force or motion is magnified in a simple machine.
Diameter
the length of a straight line that travels from one side of a circle to another, while passing through the center of a circle.
Simple Machine
A device that reduces the amount of force needed to perform a task or changes the direction of a force.
Circumference
The distance around a circle times 3.1416
What leads to technology?
technology is often the result of applied science, but it is often the result of science. It can also be the result of an accident.
What are the six types of simple machines?
The inclined plane, the wedge, the screw, the lever, the wheel and axel, and the pulley.
Which two simple machines look identical?
The inclined plane and the wedge
How is applied science different from science?
in applied science, the goal is to make something better. In sciecne, the goal is simply to learn.
Which levers magnify force?
Which levers magnify speed?1st and 2nd class
3rd class
A block and tackle is composed of 6 pulleys that all work together. What is the mechanical advantage of the block and tackle system?
6 pulleys.
How do you know if something is an inclined plane or a wedge?
Inclined plane: effort along long side
Wedge: effort along short side
A shovel is an example of a lever. To what class does it belong?
Third class lever
A child's see-saw is a lever. To what class does it belong?
First class lever
If you turn the wheel of a wheel and axle, what does the mechanical advantage do for you?
Magnify the force
If you turn the axle of a wheel and axle, what does the mechanical advantage do for you?
Magnify the speed
What is the mechanical advantage of an inclined plane with a slope of 6 feet and a height of 2 feet?
Mechanical advantage is 3
What is the mechanical advantage of a lever in which the fulcrum is 10 inches from the resistance and 40 inches from the effort?
40/10=4
What is the mechanical advantage of a wheel and axle when the wheel has a diameter of 15 inches and the axle has a diameter of 3 inches?
Mechanical advantage is 5
A screw with a pitch of 0.1 inches is turned with a screwdriver whose diameter is 2 inches. What is the mechanical advantage?
The mechanical advantage is 62.83