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3rd class levers are in your arm.
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∙ 14y ago
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How is mechanical advantage calculated for levers?
lenght of the effort arm divided by lenght of the load arm
What are some examples of third class levers in the body?
the arm and your wrist are two good examples of third class levers in your body
What do first class levers do?
First class levers change direction of force applied, like using a crow bar to open a door.In a first class lever, the fulcrum is between the force arm and the resistance arm. Seesaws, crowbars, and oars are first-class levers.
All levers have a rigid arm that turns around a point called the what?
Fulcrum.
What are some examples of 3rd class levers?
Your arm is a really good example
More examples of levers?
arm, leg, hammer, scissors, wheelbarrow, prybar
What kind of lever has a fulcrum resistance arm and effort arm?
first class levers actually in front of the effort and resistance forces
What class of lever is a radio?
Since a radio has no effort arm, no load arm, and no fulcrum, it's quite difficult to include it in the category of "levers", of any class.
What are three examples of common levers?
A claw hammer is a lever when using the claw to pull a nail. A crowbar or pry bar is also a lever. Automobile friction jacks are also levers. Your arm is a biological (biomechanical) lever.
What do first class levers always change the direction of?
First class levers change direction of force applied, like using a crow bar to open a door.In a first class lever, the fulcrum is between the force arm and the resistance arm. Seesaws, crowbars, and oars are first-class levers.
What happens to your upper arm muscles when you arm at the elbow to eat your favorite sandwich?
for example when you eat a bologna sandwich on rye, the fulcrum in your arm levers the joints in your body. This causes there to be a friction between the two muscles, causing your elbow to properly bend.
Why is the mechanical advantage of second class levers is always greater than 1?
Because the load is always between the effort and the fulcrum, so the effort arm is always longer than the load arm.
