Lever Definition and 180 Threads

as B moves to over A, ( A is a fixed point ) C slides up its guide slot and is stopped by a non compressible object and no amount of force can shift it further up. measurements in units. At this point >> how do I know how much pressure C excerts upwards. psi? Mpa? I hope I'm making myself...

if i got a beam of 40 meters and one side (35m) is 12 metric ton how do i calculate the forces on the gyroscope. I tried to caclutate it but i just get a torque and a angular momentum, how do i converted torque and angelur momenten in Netwons?

Hello! I was hoping someone here could help me solve a real world problem. So my university pool has something called a bulkhead, which is basically a bridge that floats above the water so that people can walk across the shorter dimension of the rectangular pool (50 meters long, 25 yards wide)...

Hello everyone! I'm new here and I have never been too good at physics, but now I've been trying to revise for the MCAT and I have stumbled across this question in "Kaplan MCAT Physics and Math Review": If you have and object three times as heavy as you can lift, how could a lever be used to...

Hello everyone, I am currently doing an internship and I am working on a part that opens and closes using a pneumatic cylinder as you can see bellow Here is a force diagram I would like to redesign this in order to use a cylinder with a shorter stroke and perhaps a slightly bigger diameter...

Homework Statement An ##D## meter long wooden stick with a mass of ##M## is placed on two chairs of neglegible lenght. The left is ##L## meters from the left end and the right is ##X## meters from the right end. Find the expression for the both Normal forces that act from the chairs. Homework...

My son and I were arguing about whether or not a particular noodle maker called a Spaetzle Maker is a lever. I say it is, and he says it isn't. Basically, one uses it to extrude raw noodle batter (eggs and semolina flour) over a pot of boiling water. It looks like a flat cheese grater with a...

Homework Statement In order to lift the 30 kg mass, a Force F is applied to the massless meter stick shown below. How much weight must the fulcrum bear if the mass is to be lifted? Homework Equations R/E = l/L The Attempt at a Solution So I began with the formula above and this is my set up...

Homework Statement Homework Equations ΣM=Στ The Attempt at a Solution I know how to get the net torque about point P, but I am having difficulty determining where the moment arms for each force should be. I did 9 simpler questions before this no problem, but this diagram is a bit more...

For those that are familiar with the 3 classes of lever (and the fact that all simple machines are fundamentally either a lever or an inclined plane) I have a question regarding rotational levers such as in a crank shaft. It seems to me that a crankshaft could simultaneously be considered more...

Is it possible or not to solve the typical kind of problem given more than two components; take this self made problem: A quantity measuring 12500 units be divided into three parts such that 15% first, 20% second and 30% third amount to 25% original, that is 3125. What would be each divided...

Say a lever is tilted on a fulcrum with an object on the side in contact with the floor, a mass falls onto the other side, causing the object to go flying. Does this demonstrate Action-reaction ? (action on the lever to action on the object)

Homework Statement A rotational axis is directed perpendicular to the plane of a square and is located as shown in the drawing. Two forces, F1 and F2, are applied to diagonally opposite corners, and act along the sides of the square, first as shown in part a and then as shown in part b of the...

I need help figuring out which formula to use to find what class lever I am using in a 10 ton log splitter circuit. The lever is 16 inches long and I am applying 100 pounds of force on the lever which is connected to a cylinder 5 inches in diameter, 24 inch stroke, and a 2 inch rod diameter. My...

So I'm trying to figure out how to calculate the force behind the pressures achieved in this press. I know the pressures achieved with specific amounts of water(weight) for the pivot point being at either pin a or b but I'd like to know how to calculate this myself. I've tried looking up...

Hi guys, I trying to understand one thing that I don't know where came from. To visualize the problem I will used the drawings from book. The question is for direction of Force Fb on drawing (b) and (a). I was always learned that friction is acting on direct opposite to motion. In drawing...

Hi, Some "derivations" of the law of the lever argue with conservation of energy: If one arm of the lever of length ##r_1## is pulled by a distance ##s_1## with force ##F_1##, the other arm moves by a distance ##s_2=s_1 \frac{r_2}{r_1}##. From conservation of energy ##E=F_1 s_1=F_2 s_2## it...

Homework Statement Homework Equations Concept of couple? The Attempt at a Solution First, I calculated the couple about disc, though I'm not sure if I can use this approach. Since 900 N is pulling the string of pulley downwards, I take the couple about disc as 900 x 0.4, which gives me 360...

Hi, I'm watching a talk about Archimedes Law of the lever, and I was wondering: Does anyone know how the formula d=w/2w/b-a) was derived from the lecture drawing at 9.00 min in? The speaker just skips the algebraic derivation.

I have always thought that all of "Classical Mechanics" can be explained with Newton's Laws and a few force equations (e.g., gravitational and Coulomb). In particular, the concepts of energy and torque are convenient but not necessary. If this is true, then can you explain with Newton's Laws -...

Hi guys, I'm new here and this is my first post so apologies if its in the wrong location or anything. My post is not in regards to a direct question as such but i am more looking for general advice and guidance on how to tackle a problem. I am working on a project that involves lifting...

If you flex a pipe, the energy is stored in it (assuming it returns to its original state). If that pipe were being used as a lever, wouldn't the torque it can generate be influenced by the flexibility of the lever? Why doesn't the equation T=Fd take this into account? Would all of the applied...

Hello! I have a question about grand piano action design. As a quick primer, the way a piano works is basically that each key is a lever mounted on a fulcrum, so when a player presses a key, the other end of that lever rises. A hammer is attached to the other end of the key, and when that end...

I am attempting to create a "lever" to lift the front of a 14ft 85lb Kayak up 7ft, then manually slide the Kayak to a rail, and then use the lever to lift the back of the kayak to another 7ft high rail on a truck. I decided to attempt this with PVC sections, creating an "L" the vertical shaft...

Here's my background so you know where I'm having trouble. I've attached a picture. I have to find the force produced by the muscle to keep the arm and ball at its current position in the picture. Now, I originally assumed Torque was Force in rotation, and intuitively thought you would need to...

Hey guys, I really need help with this, I do not understand what I did wrong in this experiment. I had a 30 cm ruler as a beam and some weights of 50 grams, 5 grams and 25 grams. I had a fulcrum which was 17 cm high. As you can see I only have measurements in 50, 5 and 25 grams. So I cut out...

Hi, i was unable to find this answer anywhere else on the internet...so i decided this would be the best i have a what essentially can be explained as a lever and I'm trying to prevent it from flexing/bouncing when the car is in motion (i'm only going ~5mph, probably less) the lever is a...

Forgive me if this is in the wrong category. I have a product I am working out - I am a programmer and electronic engineer by trade, which didn't include a lot of work with physics principles. I have a lever system which seems simple - but the trick is, my load is acting as a lever too...

Question about moments and torques. I understand that torque is defined as τ=Fs and understand where this comes from mathematically but am wondering why does nature make it easier to put a greater torque on an bolt with a longer lever. The only real explanation I can think of is by...

If I have 10m lever with a center of the mass 2m from the right side it must mean the shorter arm have greater mass to keep balance. Does it mean longer (lighter) arm have greater gravitational acceleration cause it must travel greater distance in the same time ?

Hello, From the figure how is it possible to say that this line shows amount of liquid while other is amount of solid. In the figure they showed MP is amount of liquid while OM is amount of solid. How?

a heavy bar, weights 0.6 Kg is used as a lever for pick up an object from 200 Kg situated 60 cm from the point of A support Calculate the length that should have the bar to lift the object with a minimum of effort answer 2 m ok we know 0.6x = 200.0.2 m But how can I continue?

Homework Statement In a hydraulic lever consisting of two ideal fluid lined cylinder/pistons with a fluid filled line coupling the two cylinders, the output force is 100 times the input force. For 1 Joule of work done on the input side, the work done on the output side is (in J):Homework...

Velocity ratio is defined as the ratio of the distance moved by effort and load, in the same time interval. It is said and known : that in the first order of lever, velocity ratio is usually greater than 1 but could be less or equal to 1. Why do we say that? And what does it mean? In the...

So, suppose I want to describe my foot, the ancle joint and my achilles tendon as a lever. I look at my foot as if it was standing on a step of a stair with my heel protruding out into the air, or if i was standing on solid ground, lifting my heels just a millimeter from the ground. Like this...

I have a tortoise shell sitting in two parts on my desk (the top and the bottom). I somehow got it in my head that it would be fun to use it as an enclosure for a robot, and I need to know its mass when I choose motors for it. Now, I don't have any precise mass-measurement tools - all I have is...

Here is the problem http://imgur.com/6KRKJQu Torque = force x lever arm We are told that the force is all the same so the only thing that would determine the torque is the size of the lever arm. The ones that I'm not sure about are B and C. The rest I think I have done correctly. Just to make...

I have here a class 1 lever style catapult built using leaf springs (A Da Vinci design) which relies on the stored energy in the springs to apply torque over a certain distance which is the length of the arm. Of course, for max distance the arm will stop at 45 degrees or pi/4 RAD. Now here is my...

I have written a short paper that addresses the question posed in the title. You can find a copy of the paper here: http://www.math.csusb.edu/faculty/pmclough/LP.pdf. I think the paper may have some pedagogical value. If you have any comments or suggestions regarding the paper or any different...

Homework Statement The diagram is attached. It is asking which position has the greatest lever arm.Homework Equations The Attempt at a Solution So, I know that the elbow is the fulcrum but what I'm struggling with is how to draw the force arrow. Where is the force coming from and where is it...

I need help with this attached question! The answer is supposedly B because of something to do with lever arms. But I don't get it at all!

My model is a lever on a table top. One arm is horizontal on the table, while the other arm is raised at an angle alpha. I'm assuming the weight of the horizontal lever (F) acts at its center of gravity at a distance f from the pivot, while the weight of the raised lever (W) acts at its center...

Hello Everyone. I need some advice in calculating the pressure of a roller printing machine. The machine is operated by a geared rotating lever which moves the impression roller across a print surface. I had thought it was a case of using the equation for rolling friction to work out the normal...

Hi there, Currently I'm working on a complicated project. I work for a packaging machinery company. The machine I'm currently working on has a critical section which you would call the 'the heart'. Here we move a 800KG (1700 Pounds) bed up and down by 50mm (2 inches). On the bottom of this...

The feat is performed by holding a 20lb sledgehammer from the bottom, shoulder level and parallel to the ground. The hammer should end up being right over your head. The length of the handle is 36 inches, and the width of the hand is 4 inches. How can I figure out the force it takes to hold the...

I've been thinking about the speed of light, and if it is possible to exceed it. So, I came up with my spaceship on a lever theory. Essentially, you have a long lever with a fulcrum near one end. At the other end, you attach a spaceship. Next, you apply pressure at the short end of the...

Homework Statement You have constructed a simple catapult which basically consists of a 4 meter long rod of negligible mass attached to a fulcrum point offset from the center of mass by 1.5 meters. You decide to launch a m2 = 0.100 kg mass from the long end of the rod by dropping a m1 = 20.0...

Hello. I tried to solve this question: So F1D1=F2D2. Thus: 60N/ 0,06m x 0,2 m= f/0,02m x 0,04m =100 Newton applied to the piston, but this doesn't fit to the answers offered. What did I wrong?:(

Hello. I am preparing for certain exams and I encountered these question. Can you guys help me to solve these ones? The 1st one I tried to apply formula about density (p=m/v), but I guess that I need to solve through that ice cube. That I firstly sort out the number of atoms in ice cube...

The two hydraulic press are joined by a lever, the ratio between the SA of the first press is 1:100 and of the second is 1:50, find If a force 10 Newton acts on the small piston of the first press a) the load b) mechanical advantage What is the load? Is it mass or force and which force And...