Types of Levers
Вставка
- Опубліковано 7 чер 2024
- #ngscience.com #levers #force
A lever is a simple machine that includes a bar that is free to move about a fixed point called a fulcrum. Levers make work easier by reducing the effort required to move the load, but increasing the distance moved by the effort. This can be achieved by moving the fulcrum closer to the load or applying the effort further from the fulcrum.
There are three types of levers -
first-class levers, second-class levers and third-class levers. Each type of lever makes work easier in different ways.
In a first-class lever, the fulcrum is between the load and the place on the bar where the effort is applied. This changes the direction of the effort. Work is the easiest when the effort is applied to the bar as far from the fulcrum as possible. The distance the effort moves is increased but the force applied to the load is multiplied.
Moving the fulcrum closer to the load increases the distance the effort moves and increases the force applied to the load. You use a first-class lever when you use a screwdriver to open a tin of paint. The rim of the paint tin is the fulcrum. The fulcrum is close to the load which increases the distance the effort moves and multiplies the force applied to the lid.
The back of a claw hammer, crowbars, seesaws and scissors are objects we use that function as first-class levers.
In second-class levers, the load is between the effort and the fulcrum. The effort moves over a larger distance to raise the load a smaller distance but with greater force. The closer the load is to the fulcrum, the larger the distance the effort moves and the greater the force applied to the load. Notice that in second-class levers, the effort applied is in the same direction as the force applied to the load.
Wheelbarrows, nutcrackers and bottle-openers are objects we use that function as second-class levers.
In both first-class and second-class levers, work is made easier by decreasing the effort required but applying the effort over a greater distance. In a third-class lever, the effort is between the fulcrum and the load. Greater effort is required to move the load, but the speed at which the load moves is multiplied. As in second-class levers, the direction of the effort and the force applied to the load is in the same direction.
Fishing rods, baseball bats and brooms are objects that function as third-class levers.
🙌❤made my homework alot more easier...thank you
Thank you so much! so helpful for my homework!!!
Thanks homework 70% accomplished
So glad you liked it. Good luck with your studies!
Thankyou
Thankyou so much for y
This help me Alot🎉💗
Frl
shut up lil blacky
🎉
Multiple errors showing the wrong lever type during the description - see if you can find them. The words are true but some of the examples are incorrect. I'm going to use this as a review assignment with my Science 14 class.
There are bottle openers that are 2nd class levers, but not the one shown in this video.
In our book it is written load and effort are in same direction in class 1 levers but you said the opposite
In a class 1 lever, the load and the effort are not in the same direction; they are on opposite sides of the fulcrum. A class 1 lever is characterized by having the fulcrum located between the load (the resistance to be overcome) and the effort (the force applied to move the load).
Common examples of class 1 levers include seesaws and scissors. In these cases, when you apply force in one direction (the effort), the load moves in the opposite direction. This arrangement can provide a mechanical advantage, allowing you to move a larger load with a smaller effort, depending on the distances from the fulcrum to the load and to the effort point.
Actually in your video there is many pictures you are not explaining properly so we can't understand properly
thnaks
hut up!!!!11!!!1
so rude
Nihao
Sese