0
Simple Machines (engineering)
A simple machine is a mechanical device that can help you change the force applied to help do more work easier. There are six simple machines: Wheel and axle, pulley, inclined plane, wedge, and screw.
1,499 Questions
Using machines to operate other machines is called?
I think its called operating i am not sure but type this question you asked into google.com and it will probably pop up. I hope I helped answer your question throughly.
The original six are the lever, wheel and axle, inclined plane, wedge, screw, and pulley.
How many simple machines are in wire cutters?
Two levers in the form of handles, two wedges in the form of blades and another lever in the form of a rotating attachment point
What kind of simple machine is a staple gun?
the type of simple machine a staple gun in a .................... you figure out....... you were not born for nothing
When a simple machine is used to perform a task what factors may be affected?
the amount of force needed to perform the task
the distance over which the force is applied
the direction in which the force is applied
Is a hammer an axle wheel or lever?
A hammer is lever, not a wheel and axle, but only when you are using the claw end to pull out nails. When you are hammering in nails it does not fall into the category of simple machines, although the force in the hammer is increased by centrifugal force, on the same principle as the slingshot.
What simple machine is a nutcracker an example of?
it is a third class lever which means the input force is between the fulcrum and the load.
What branch of science studies simple machines?
Physics.
Simple machines include the fulcrum and lever, wheel and axle, pulley, and inclined plane. The principles involved in their operation are understood in a branch of physics called mechanics, or sometimes, classical mechanics.
When doing work using simple machine's what happens when the effort distance is increased?
the effort is decreased
What simple machines are in a scissor style jack?
The scissor style jack contains only two simple machines: the screw and the lever.
What simple machines are in a rocket engine?
A rocket engine is a continuously fed explosion in a chamber with one aperture, which means that the pressure on the walls is unbalanced.
How does a crowbar make work easier?
it makes work easier by changing an input force into a larger output force.
Is a wedge also a simple machine in pliers?
If they are cutting pliers, the cutting edges act as wedges.
How do you make a simple theodolite?
February 6, 2010
Filed under tutorials
Tags: 3rd grade, homeschool, math activities, measurement
one response
A theodolite is a surveying instrument of unknown origin, but can be traced back to the 16th-century English mathematician Leonard Digges. This is info for you not the child.
You will need:
- a piece of thick cardboard
- a plastic straw
- thread, or thin string
- a small screw
- tape
- scissors
- a ruler
- tape measure for activity
Follow these steps to make your theodolite:
- Cut a 6 x 6 inch square from the cardboard
- cut the square in half diagonally
- tape the straw to the diagonally cut edge of one of the triangles
- cut a 10″ pice of thread, and tie on end to the screw
- tape the other end of the thread to the triangle so that it hangs straight down along one of the 6″ edges.
Your theodolite is ready to rock & roll. Not really, but is is ready to measure tall things. If you can find a straw as long as the diagonal side, then by all means allow the straw to run the entire length of the side. This was the longest straw I had.
Using your new tool is simple. Follow these easy steps:
- find a tall object that you would like to measure
- raise your theodolite up to your eye, and look through the straw.
- find the top of your object through the straw
- make sure your string with the screw on the end stays straight along the edge of your triangle.
- You must move backward or forward until the top of your object can be seen through the straw. The thread must stay in line with the edge of your triangle. It can not dangle forward, backward or to the side.
- Once you have found the correct position and can see the top of your object through the straw & the string is aligned with the edge of your triangle, mark your position on the ground. You have created an invisible triangle.
- After you have marked your position on the ground, measure the distance you are from the base of the object you are measuring using the tape measure.
- Now measure your own height.
- Add the distance you measured to your height. This is the height of your object.
For instance, if the distance to the tree is 45 feet, and you are 4 feet 10 inches tall, your total would be 49 feet 10 inches.
When we did this activity, we used a tape measure. I had her write down the distance to the object in inches, and her height in inches. After she added the 2 heights together , I had her convert the inches to feet in order to get in some math practice.
So if her total were 495 inches, she would find how many feet this is by dividing by 12. It would be 41 feet, 3 inches.Like
Be the first to like this.
One Response to "Making a simple theodolite: an activity for a measurement lesson"Comments Feed
- lessons this week-finishing up linear measure « Our Little Nature Nest
[...] we walked around a bit we sat down by the river, and made a simple cardboard theodolite. A theodolite is a tool surveyors use to measure tall objects from a distance. You can make a very [...]Reply
The plane in which the reactive gyroscipic couple acts is called the gyroscopic plane
Can you use silicone spray on your Bond knitting Machine?
Most definitely. The silicone sprays are best for the plastic bed machines but not for the metal bed machines. Watch out when you do purchase a silicone spray as some use propane as the propellant which may not be good, read to make sure it is only silicone.
