Levers can make it easier for people to lift heavy objects or open things. The object being moved by...
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Transcript of Levers can make it easier for people to lift heavy objects or open things. The object being moved by...
![Page 1: Levers can make it easier for people to lift heavy objects or open things. The object being moved by a simple machine such as a lever is called a load.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc21a28abf838ca4f26/html5/thumbnails/1.jpg)
![Page 2: Levers can make it easier for people to lift heavy objects or open things. The object being moved by a simple machine such as a lever is called a load.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc21a28abf838ca4f26/html5/thumbnails/2.jpg)
• Levers can make it easier for people to lift heavy objects or open things.
• The object being moved by a simple machine such as a lever is called a load.
• You would use less energy using a lever than if you simply tried to lift a rock.
• A wheelbarrow and seesaw are examples of levers.
![Page 3: Levers can make it easier for people to lift heavy objects or open things. The object being moved by a simple machine such as a lever is called a load.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc21a28abf838ca4f26/html5/thumbnails/3.jpg)
• There are two types of pulleys a movable pulley and a fixed pulley.
• A single fixed pulley makes work easier by changing the direction of the effort force.
• When pulleys are used they can decrease the effort force needed to lift a load.
![Page 4: Levers can make it easier for people to lift heavy objects or open things. The object being moved by a simple machine such as a lever is called a load.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc21a28abf838ca4f26/html5/thumbnails/4.jpg)
• A wedge changes a downward or forward force into a sideways force.
• A wedge is two inclined planes back to back.
• The blade of an ax is a wedge with a sharp edge.
• A wedge is a moving inclined plane.
![Page 5: Levers can make it easier for people to lift heavy objects or open things. The object being moved by a simple machine such as a lever is called a load.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc21a28abf838ca4f26/html5/thumbnails/5.jpg)
• Movers use inclined planes to slide heavy objects in and out of their trucks.
• Inclined planes are also used to make it easier for handicapped people to get around.
• An inclined plane is a simple machine that only has one part.
![Page 6: Levers can make it easier for people to lift heavy objects or open things. The object being moved by a simple machine such as a lever is called a load.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc21a28abf838ca4f26/html5/thumbnails/6.jpg)
• A screw is an inclined plane twisted into a spiral.
• When a screw is turned,
It moves forward.• You have to keep turning
a screw for it to move a short distance.
• You need only a small effort force to turn a screw.
![Page 7: Levers can make it easier for people to lift heavy objects or open things. The object being moved by a simple machine such as a lever is called a load.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc21a28abf838ca4f26/html5/thumbnails/7.jpg)
• When you turn a doorknob, you are using a wheel and axle.
• A Ferris wheel is a wheel and axle.
• The wheel and axle has 2 parts, a wheel and the bar that passes through the center of the wheel.
• A screwdriver is a wheel and axle.
![Page 8: Levers can make it easier for people to lift heavy objects or open things. The object being moved by a simple machine such as a lever is called a load.](https://reader035.fdocuments.net/reader035/viewer/2022070413/5697bfc21a28abf838ca4f26/html5/thumbnails/8.jpg)