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What are the four parts of the lever?
load arm, effort arm, load, effort, fulcrum!
How much force would a biceps muscle inserted 4 cm from the fulcrum need to hold the arm stationary at a 90 percent angle?
Only a very small force if the arm only has to be supported. What other weights do the arm carry and at what angle does the biceps attach to the fore-arm? What is the distance to the hand from the fulcrum and what is the arm weight (assuming a weight is in the hand and arm weight has to be added to the weight-in-hand)? The length of the hand to fulcrum is also required. There is no such thing as 90% angle: 90 degrees perhaps?
How can you calculate the maximum distance of a mousetrap car without knowing force or acceleration?
First off, A mouse trap lever only moves 180 degrees. So you would take the length of your mouse trap pulling arm (e.g. 12''), and multiply it by two (24'') Now you have the diameter of the circle if the mousetrap arm could spin a full 360 degrees. So to find the circumference of that invisible circle you would multiply the diameter by pi (24'' x 3.14 = 75.36'') Now since the mouse trap arm only moves 180 degrees, you would divide your answer by 2, because 180 is half of 360. (75.36'' divided by 2 = 37.68'') Now that you have the distance that the arm travels you need to find the circumference of the axle your pulling wheels are on. Say that your axel has a quarter inch diameter ( .25'' ) you would do the same thing as before: (e.g. .25'' x pi [3.14] = 0.785'') Now you would divide the distance your lever arm moves by the circumference of your axle (e.g. 37.68'' divided by 0.785'' = 48) this means that the string tied to the tip of the arm would wrap around the axle 48 times. Now for the final step the circumference of the wheels, just do the same as before, diameter multiplexed by pi. (e.g 5'' x 3.14 = 15.7'' ) Now that you know how many times the axle will rotate (48 times) and how far it travels each rotation (15.7'') all you have to do is multiply them! e.g. (48 x 15.7 = 753.6'' ) or 20.93 yards, one fifth of a football field! But keep in mind this is in a world with out friction. I apologize if I was at all confusing, im not too good at teaching things, haha. I hope I helped!
How big is 36 inches?
36 inches = 3 feet = 1 yard ~= distance between the nose and fingertips of the outstretched arm of a man.
What is your right arm and what is your left arm?
ask yo mama
Is the arm lever a distance multiplier or a force multiplier?
Well, i'd say its both. depends on the case to specify when it is a force multiplier or a distance multiplier.
The product of force and lever-arm distance in producing rotation is?
In a lever, the product of effort and effort arm is called Moment of effort and product of load and load arm is called Moment of load. In general case, as asked in the question, "The Product of force and lever-arm distance is called Moment of Force"the Moment of Force isn't correct its {Torque}
How do you calculate a lever's mechanical advantage?
From the design of the lever (on paper), the mechanical advantage is effort arm/load arm which means Distance from pivot to the applied force/distance from pivot to the load The result of that is that the forces will have the reciprocal ratio, and the input force to the lever will be the output force/the Mechanical Advantage .
In what class lever is the resistance arm always longer than the force arm?
The class 3 lever always has a longer resistance arm than the force arm. This is because the distance from the Fulcrum to the load/resistance is always going to be further that the fulcrum to where the effort/force is applied. If you look at a diagram of a 3rd class lever, you will be able to see why this is.
What's a lever used for?
A lever is a simple machine that uses variable distance to multiply force, or to redirect existing forces. With a lever, the force exerted by gravity on a weight can be used to lift another weight. By varying the distance between a lever's ends and its fulcrum, a heavy object can be lifted a short distance by a smaller force moving a longer distance.
Can a force produce a torque when there is no lever arm?
no because to get a torque you must multiply lever arm by force. If lever is zero, then torque is zero
What the force that pushes on one arm of a lever?
The answer is the force
What is the force that pushes on one arm of a lever?
The answer is the force
Why is a lever a force multiplier?
The transmission lever is very simple and there is no friction.
What does it mean if a lever is at a mechanical disadvantage?
A lever at a mechanical disadvantage exerts a smaller force on the output arm than is exerted on the input arm; if you push with 10N on a lever with a disadvantage of 2, the other arm only exerts a 5N force. However, a lever with a mechanical disadvantage exerts the smaller force over a greater distance. Trebuchets are one example of a mechanically disadvantaged lever: the fairly small projectile doesn't need a huge force to propel it, and the greater distance afforded by the lever allows it to travel at great speed.
What is lever arm ratio?
Divide the length of the force arm by the length of the resistance arm.
In a second class lever why must you exert input force over a greater distance?
If the input force is applied at a greater distance than the length of the effort arm is increased thereby reducing the effort.
