Unit 2: Inclined planes Lesson 1: THE INCLINED PLANE Funnel

Slides:



Advertisements
Similar presentations
Welcome to a world full of machines!
Advertisements

Chapter: Work and Simple Machines
Simple Machines In a simple machine, input work is done by a person applying a single force, and the machine does output work also by means of a single.
Work and Simple Machines
Simple and Compound Machines
Work and Simple Machines Objectives: 1) know how six different simple machines are used in every day life to make work easier 2) be able.
Simple Machines and Mechanical Advantage
Simple Machines Give me a lever long enough, and a fulcrum on which to place it, and I will move the world. Aristotle.
Lesson 20 Any change that occurs requires energy
Simple Machines “Give me a place to stand and I will move the Earth”
Welcome to a world full of machines! There are machines all around us!
Inclined Plane, Wedge, and Screw
Simple Machines Ag Mech and Metal. Simple Machines Introduction to.
Simple Machines Outline Notes
Simple Machines. Would it require more work to take 100, 1kg books to the book room one at a time, or to take them in stacks of 20? Why?
Types of Simple Machines
By Sadie Entwisle, Sarah Ross, and Mandy McCandless.
Mechanical Advantage, Efficiency, and Types of Simple Machines.
Simple Machines. What is a Simple Machine? A simple machine is a device that helps to accomplish a task by redirecting or alleviating some of the work.
Work & Machines. Topics Work and Power –Definition, Calculation, and Measurement Using Machines –Nature of Machines –Mechanical Advantage –Efficiency.
How Tools Work. The Six Simple Machines  Lever  Inclined Plane  Wedge  Screw  Pulley  Wheel and Axle.
Welcome to a world full of machines! Copy the following terms in your lab book: (you might want to leave a space because you need to have a definition.
Simple Machines Original presentation created by a teacher with the Nebo School District (Spanish Fork, Utah). Modified by Derek Osborne, Lincoln Park.
Advanced Design Applications Power and Energy © 2014 International Technology and Engineering Educators Association STEM  Center for Teaching and Learning™
What are simple machines and how do they work?
Inclined planes, wedges, and screws.  An inclined plane is the simplest of the simple machines because there are no moving parts.  A plane is a flat.
Simple Machines Mr. Pennington Pennington.
Essential Questions  Why do we use simple machines?  Why is mechanical advantage important?  How do different pulley designs alter the mechanical advantage?
Why do we need simple machines?
Real Work: The Great Pyramid Built 2600 B.C. - requiring massive resources. Estimated to have 2,300,000 stone blocks weighing from 2 – 30 tons and some.
Simple Machines. What are the simple machines? Inclined Plane An inclined plane is a slanting surface that connects a lower level to a higher level.
By Carly Carlson. Simple And Complex Machines  Simple machine- A machine that changes the amount of force put in to motion, normally making a job easier.
The 6 Simple Machines Screw Wedge Inclined Plane Pulley Wheel and Axle
Simple Machines.
Simple Machines Machine: an object that changes either the magnitude or direction of a force.
Simple Machines & Their Mechanical Advantages. Wedge It is used to push an object(s) apart. It is made up of two inclined planes. These planes meet and.
Simple Machines Types.
Example Have you ever : Tried to take a super heavy object up a flight of stairs ? WHAT HAPPENED.
By: Chase Houston Gears A gear is a wheel that has teeth. Gears come in different shape and sizes.
The Wedge and The Pulley
Simple Machines Spring 2014.
Simple Machines.
How are simple machines similar and different?. Simple Machine A machine that does work with only one movement. Compound Machine A machine made up of.
Wedge Inclined Plane Screw Wheel and Axle Lever Pulley.
Bell Ringer  Why do we use machines?  What is the formula for work?  What are the SI units for work?  What is the formula for power? 
INCLINE PLANE FAMILY Inclined planes multiply and redirect force.
Machines Mechanical Advantage, Efficiency, and Types of Simple Machines.
GPS Standards S8CS5a: Observe and explain how parts can be related to other parts in a system such as the role of simple machines in complex (compound)
A simple machine is a device that helps reduce the amount of force required to do work. Work is done when a force (effort force) is applied over a distance.
Simple Machines.  MACHINE A machine is a device by means of which work can be performed easily or in a convenient manner. A machine can be used : To.
By Natalia Siguenza, Samantha Hughes and Alyssa Rueger.
Welcome to a world full of machines!
Welcome to a world full of machines!
Machines Do Work How do machines make work easier? A machine is a device that changes a force. Machines make work easier to do. They change the size of.
Simple and Compound Machines
“Don’t make me read, make me understand “
“Work, Power, and Simple Machines”
May 18th, 2016 Finish Bill Nye Simple Machines
What is a simple machine?
Simple Machines and Work
14-4 Simple Machines Objectives
The 6 Simple Machines All machines are made up of some of the 6 simple machines. Wheel and axle Pulley Lever Wedge Screw Inclined Plane.
Simple Machines.
Six Simple Machines Lever Wheel & Axle Pulley Inclined Plane Wedge
Welcome to a world full of machines!
Machines 4. Simple Machines
Introduction to Simple Machines.
Welcome to a world full of machines!
Think about it: How did ancient people build massive structures such as the pyramids in Egypt and Stonehenge? If we did not have the large machines that.
Practice #7—Screws Mr. Burleson
Presentation transcript:

Unit 2: Inclined planes Lesson 1: THE INCLINED PLANE Funnel 1. It is a pipe with a wide mouth. It is used to channel liquid into bottles. Funnel

2. It is a truck used to move furniture from one place to another 2. It is a truck used to move furniture from one place to another. Portable ramps allow easy loading and unloading of this kind of trucks. Moving lorry

3. It is a construction designed to bridge a large vertical distance by dividing it into smaller vertical distances, called steps. Stairway

4. It is a truck used for transporting loose material (such as sand) for construction. It has an open-box which can be lifted up to allow the contents to be unloaded easily. Tipper lorry

5. It is a sport in which skiers go down a take-off ramp, jump, and attempt to land the furthest down on the hill below. Ski jumping

6. It can be found in parks and schools 6. It can be found in parks and schools. The user climbs to the top of it via a ladder or stairs, sits down on the top of it and slides down. Playground slide

The inclined plane An inclined plane is a flat surface whose endpoints are at different heights. By moving an object up an inclined plane rather than completely vertically, the amount of force required is reduced, at the expense of increasing the distance the object must travel. We call the weight of the object the load and it can be identified with the letter L. The effort we have to apply to move the object is the force F. The height of the inclined plane is the vertical distance between the lowest and the highest points of the ramp. We represent this distance with an h. The path the object must follow if we want to use this simple machine is the length (l) of the inclined plane. FRAGILE 5. length (l) 3. Force (F) 4. height (h) 1. Inclined plane 2. Load (L)

C B A h l FRAGILE F Wl L Wh F

FRAGILE F L l h

Nail (wedge) Drill (screw) Jack (screw) Knife (wedge) Corkscrew (screw) Bulb (screw)

Archimedes’ screw (screw) Fork (wedge) Archimedes’ screw (screw) Screw (screw) Axe (wedge) Saw (wedge) Pin (wedge)

Bow (wedge) Jar (screw) Auger (screw) nail drill knife jack fork corkscrew axe bulb saw Archimedes’ screw pin screw bow jar auger

C O K N J I C K A O E C R CHIME N IL W P ES N C EW Across C O K N J 4. With this device we can make a hole in the ground. A U G E R B U L B 5. Thanks to this item we can see in the dark. I C K A O 7. We use it to eat what we cut with number 2. F O R K S C R E W 8. If you turn it properly you can join two objects. E C R CHIME 10. In the middle ages it used to be a weapon. N 12. Machine for perforating materials. 13. With its teeth we can cut wood. A X E 14. It can be full of honey, for example. IL W P Down D R I L L 1. It is a tool for opening wine bottles. ES N 2. We use it to cut food. 3. It is very useful when you have to change a wheel. S A W 5. It is the front of a ship. C 6. With this machine you can push water up (two words). J A R 9. If you hit it with a hammer you can join two objects. EW 11. It can be used to fasten a poster to the wall.

Lesson 2: THE WEDGE Sentence 1: The wedge is an adaptation of the inclined plane. Sentence 2: This adaptation consists of two inclined planes joined back to back. Sentence 3: These planes meet and form a sharp edge. Sentence 4: But a wedge can also be round. Sentence 5: Round like the tip of a nail. Sentence 6: In that case, wedges can be seen as many inclined planes beside each other around an axis.

F. In use, an inclined plane remains stationary while the wedge moves. D. The mechanical advantage of inclined planes and wedges is the ratio of the output force to the input force. C. Although the wedge is an adaptation of the inclined plane both of them are simple machines. A. The input force is applied parallel to the ramp of an inclined plane, while the input force is applied perpendicular to the thickness of the wedge. B. Instead of helping you to move things to a higher level as inclined planes do, normally wedges help you to split things apart. G. Inclined planes and wedges multiply force but they don’t multiply energy. E. In both machines the smaller the angle, the bigger the mechanical advantage. F. In use, an inclined plane remains stationary while the wedge moves. To move things Simple machines To split things MA = Output force/Input force Input force parallel to the ramp Input force perpendicular to the thickness Smaller angle  bigger MA In use remains stationary Multiply forces In use moves Inclined plane Wedge

1. With which of the two wedges will be easier to split the rectangle apart? Why? With the first one because its mechanical advantage is bigger. 2. What output force (L) will we get with the first wedge if we hit its thick side (t) with a 500 N force (F)? And with the second one? 3. How deep do we have to drive the first wedge in to open a 2,5 cm crack in the rectangle? And the second one? The first one must be driven in 6 cm and the second one 3 cm. We have seen that usually inclined planes are used to move things to a higher level and wedges are used to split things apart. Think about another application of inclined planes and wedges and give an example. They can also be used as holding devices as, for example, a doorstop.

Lesson 3: THE SCREW Cathetus: In a right-angled triangle, the cathetus (plural: catheti), commonly known as a leg, is either of the sides that are adjacent to the right angle. Hypotenuse: A hypotenuse is the longest side of a right-angled triangle, the side opposite the right angle. Thread: A screw thread, often abbreviated thread, is a helical structure used to convert between rotational and linear movement or force. Screw: A screw is an externally threaded fastener capable of being inserted into holes in assembled parts, of mating with a preformed internal thread or forming its own thread, and of being tightened or released by torquing the head. Bolt: A bolt is an externally threaded fastener designed for insertion through the holes in assembled parts, and is normally intended to be tightened or released by torquing a nut. Nut: A nut is a type of fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten two or more of parts together. Pitch: The pitch of a screw is the distance from the crest of one thread to the next.

Pitch Bolt Thread Hypotenuse Screw Nut Cathetus