Levers
Levers are an essential part of many mechanisms. They can be used to change the amount, the strength and the direction of movement.
The position of the force and the load are interchangeable and by moving them to different points on the lever, different effects can be produced. The fixed point of the lever about which it moves is known as the fulcrum. In this example the force and the load move in opposite directions. With the force three times closer to the fulcrum them the load lifted is only one third of the force but it move three times as far.
First order lever. Like a see-saw or balance, the load and the force are seperated by the fulcrum. As one moves up the orther moves down. The amount and the strength of the movement is proportianal to the distance from the fulcum
Second order lever. A wheel barrow is a second order lever. Here the load is between the force and the fulcrum.
This uses mechanical advantage to ease lifting of a large weight.
Third order lever.
Here the force is between the fulcrum and the load. Mechanical advantage is reduced but the movement at the load point is increased.
Comments
please can you explain more than just 1 sentence
thank you
robives
Sure, what do you want to know?
What are the 5 main mechanisms?
robives
lever, linkages, grumpy, sleepy and salt & vinegar.
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Anyone any idea?
maxlrainer
Maybe the classical simple machines are meant:
Lever
Wheel and axle
Pulley
Inclined plane
Wedge
Screw
are levers basically pivots or not?
some examples of third order lever
Smelter
Levers are beams that rotate about a pivot point.
Basically an arm on a hinge.
fishin rod is an example of a third class lever
marry me rob!! i am in love with your drawings!! i love you!!
oh rob i love you to
Smelter
And gears are just levers in a circle.
http://www.wimp.com/manualtransmission/
Nice find Smelter! - RI
I learned a lot from this website. I didn't fail computer class even! How awesome is that!?
Very! - RI
Rob Ives, do you specifically publish and generate everything on this website? If you do, I am awed. This web is amazing!
Yes I do :-) - RI
waterrocketsrule
.
"lever, linkages, grumpy, sleepy and salt & vinegar.
---
Anyone any idea?"
Thats funny LOLOLOLO
Smelter
Tired "teacher" joke. Northern England humour.
no 1st class levers have pivots like a see-saw a pivot is a fulcrum
does anybody know what mechanisms to look at to turn downward vertical force into lateral force?
Bell crank I reckon - RI