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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
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.
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The machine is a football because you can throw it and kick it and a machine is a thing that needs force to help complete a task.
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
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[...] 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
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How many simple machines are in a flag pole?
I don't know the answer... But, I think is:~1
I hope is "pulley".
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How does a hand crank winch make work easier?
The handle on the crank is a essentially a Lever.
It makes it easier to pull in heavy loads on the cable attached to the winch.
How can you make machines more efficient?
Reduce or remove friction.
Ensure that the energy going in is not wasted due to unnecessary work or heat.
Why is a screw a simple machine and not a compound machine?
Compound machines are things that are made up of 1 or more simple machines. A screw isn't made up of any simple machines unless you count the screw as a simple machine.
What kind of simple machine is a chain and sprocket?
In essence it is a pulley in which the chain and the wheel cannot slip with regard to each other.
What types of simple machine helps run the carnival ride shown?
If it a Ferris wheel then it would be a lever and screws nails.
What is the use of machines called?
The use of machines is called operating machinery. You are using it for whatever porpose so therefore you are operating it. Whether it be operating heavy equipment down to using a computer.
Is a grocery cart a compound machine or a simple machine?
Its a simple machine machine i could see where your coming from thinking it is a compound machine. But i mean it is simple. Now i know a couple stores have compound machine
