Levers
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A lever is a simple machine that uses a turning point called a fulcrum to change the amount, strength, and direction of movement. An object being moved is called the load or load force, while the force used to move the lever is called the effort force. There are three classes of levers: class 1 levers have the load and effort forces on opposite sides of the fulcrum; class 2 levers have the load between the effort and fulcrum; and class 3 levers have the effort between the fulcrum and load. The closer an object is to the fulcrum, the easier it is to move.
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This will help you in understanding the Lever system in a better way.
Diploma i em u v simple machines
This document discusses simple machines and Newton's laws of motion. It begins by defining concepts like momentum, Newton's three laws of motion, and applications of the laws such as falling apples. It then discusses mechanical advantage, efficiency, and specific simple machines like levers, wheels and axles, and pulleys. Examples of machines that use these principles are also provided, such as jacks, winches, and crabs. Reference materials on engineering mechanics are listed at the end.
MECHANICAL-APPLIANCES-ON-SHIPBOARD.pptx
This chapter discusses various mechanical appliances used on ships, including their purposes and operating principles. It describes tackles and their types, explaining that tackles provide mechanical advantage by multiplying force but reducing speed. Levers are also covered, identifying the three classes of levers and how lever ratio is calculated. Factors that determine the span of cranes and derricks like load weight and rope angles are also summarized.
Levers
The document discusses different types of simple machines, including levers, pulleys, and the wheel and axle. It defines machines as devices that make work easier. There are two types of simple machines: force magnifiers and movement magnifiers. Levers are described as rigid objects that rotate around a fulcrum. There are three classes of levers based on the relative positions of the effort force, load, and fulcrum. Pulleys and the wheel and axle are also described as simple machines. Examples of these machines and their applications in the human body are provided.
Levers
The document discusses different types of simple machines, including levers, pulleys, and the wheel and axle. It defines machines as devices that make work easier. There are two types of simple machines: force magnifiers and movement magnifiers. Levers are described as rigid objects that rotate around a fulcrum. There are three classes of levers based on the relative positions of the effort force, load, and fulcrum. Pulleys and the wheel and axle are also described as simple machines. Examples of simple machines in the human body are provided.
CHAPTER 3_NAS (CASIMIRO & CRISTOBAL).pptx
Mechanical appliances on ships utilize mechanical principles to facilitate tasks like cargo handling, anchoring, and mooring. They provide force, motion, or control. Various forces act on ships, including external forces from waves, currents, wind, and internal forces from weight, propulsion, and tension. Mechanical concepts like the composition and resolution of forces, spans, levers, and tackles are important for understanding how machines on ships function. Tackles can multiply force but reduce speed, with single tackles using one rope and pulleys and double tackles using two ropes and pulleys.
Simple & compound machines
This document defines simple and compound machines and describes the six simple machines: inclined plane, screw, wedge, lever, pulley, and wheel and axle. It provides examples of each machine, explaining how they work and their functions. Compound machines are defined as combinations of two or more simple machines and examples are given like tanks, engines, lathe machines, and cycles.
Simple and compound__machines
Simple machines make work easier by changing the amount of force needed or the distance through which force is applied. The six simple machines are the lever, wheel and axle, pulley, inclined plane, wedge, and screw. Compound machines combine two or more simple machines to make work even easier by providing a greater mechanical advantage.
Levers
The document provides an overview of simple machines, focusing on levers. It defines a lever as a stiff structure that pivots on a fixed point called the fulcrum. There are three main parts of a lever: the resistance or load, which is the object being moved; the effort force or input force, which is the work applied; and the fulcrum, which is the fixed pivot point. Levers are classified into three classes based on the position of the load, effort, and fulcrum. Examples of each class of lever are given, along with diagrams showing the key parts. The document tests the reader's understanding of lever classification and parts through examples.
Describing Simple Machines, their Characteristics and Uses.pptx
This document describes simple machines and levers. It defines simple machines as tools that make work easier by transferring or changing the direction of force. Levers in particular are described as having a beam and fulcrum, and are used to lift heavy loads with less effort. The key parts of a lever are identified as the fulcrum, load, and effort. There are three types of levers - first, second, and third class - which differ based on the position of the fulcrum relative to the load and effort.
Similar to Levers (20)
Describing Simple Machines, their Characteristics and Uses.pptx
Describing Simple Machines, their Characteristics and Uses.pptx
Levers
- 1. Levers
- 2. Definition • A simple machine • A board or bar that rests on a turning point called the fulcrum • Used to change the amount, the strength and the direction of movement. • The position of the force and the load can be changed by moving them to different points on the lever.
- 3. Definition • The position of the force and the load can be changed by moving them to different points on the lever. • An object that a lever moves is called the load or load force. • The force used to move a lever is called the effort force. • The closer the object is to the fulcrum, the easier it is to move.
- 4. 1st Class or Class 1 Lever • The load force and the effort force are separated by the fulcrum • As one moves up the other moves down. • The amount and the strength of the movement is depends on the distance from the fulcrum http://www.hometrainingtools.com
- 5. Remember: The force that is pushing down is the EFFORT FORCE The force of the load or weight is the LOAD FORCE
- 6. 2nd Class or Class 2 Lever • The load force is between the effort force and the fulcrum. • This lever uses mechanical advantage to make moving large weights easier. http://www.hometrainingtools.com
- 7. Remember: The force that is pushing down is the EFFORT FORCE The force of the load or weight is the LOAD FORCE
- 8. 3rd Class or Class 3 Lever • The effort force is between the fulcrum and the load. • Mechanical advantage is reduced but more movement is possible. http://www.hometrainingtools.com
- 9. Remember: The force that is pushing down is the EFFORT FORCE The force of the load or weight is the LOAD FORCE