Forces Definition and 1000 Threads

Well, I'm having trouble with the free body diagrams. For ##A## we have ##y)## weight, normal force, contact force with ##B##, ##F . sin(36.8°)##. And the acceleration is ##0## because we want to calculate the maximun force before moving. ##\Sigma \vec F = m . a_y## ##\vec N_A + \vec F ...

Alright, to start off: I'm not even sure how this works in the first place. What I do understand is that if they carry current in the opposite direction, using right-hand grip rule, the magnetic field between them will be the same (into the page). Hence using the left-hand rule, I can deduce...

Which could be the first step to find the V(t) ?

Hey y'all Can anyone just tell me every detail about Lorentz forces ? I have a pretty good idea, but i want to surprise everyone in the presentation that i am about to give, so please just tell me whatever detail you know . Every single detail might be helpful . Also , if anyone knows how to...

How mathematically within the confines of mainstream physics would you experts in physics merge Einstein's Field Equations with Quantum Mechanics and Quantum Field Theory? I am looking for a different perspective on this subject usually I get the perspective of "Cranks".

Is it that work is done to overcome the nuclear forces holding the nucleus together?

i tryed putting all the number into that equation but it does not work, i have no clue if i need to include the angle to solve this or not and if i do i have no clue how i would

a = (change in magnitude of velocity) + (change in direction of velocity) → Can you feel when you change direction? Even if force and acceleration are constant? ↑ ↓ ↑ ↓ ↑ ↓ o

OK so a wire with a current creates a b field in accordance with the right hand rule. Now moving charge will feel a force (if its moving in the correct direction) while stationary charges will not feel a magnetic force. What I am curious about is if we move the wire itself, will a stationary...

Hello, First of all I want to say that I am not an EE, I am an ME but I am working for an EE laboratory on campus and am trying to get a force from and electrical circuit on a project here. I am using the following equations: F = 1/2*L'*I^2 (where L' = H/m) and F =...

Trying to solve it

The question comes from a thought experiment of a rocket approaching the Earth accelerating at a constant rate of 1g from say from a hypothetical "earth like planet" near by. . we would be standing on the floor of the upright rocket as it lifts off, if we are standing on a scale, our...

The first force components: Fx = ax + by², Fy = az + 2bxy, Fz = ay + bz² I calculated the integral V=-∫Fdr, using dr=(dx,dy,dz) The result I found was -(1/2(ax²)+2azy+2bxy²+1/3bz³) The answer in the book (Kibble's Classical Mechanics): -(1/2(ax²)+azy+bxy²+1/3bz³)The second force: Fr = 2ar sin θ...

For a project I need some dry workspace outdoors, so I build a wooden frame and covered it by a tarp. It's kind of like a carport with a A-roof where one side is 2,4m, the other is 3,6m. Angle of inclination is 30 degrees on both sides. Length of the building is 10m. The roof frame is placed on...

Determine Force from F2 along u and v axes. CompF= F*Cos(angle); CompF onto U = 8kN*Cos(30) = 6.93kN Angle between F2 and V: 180-75 = 105; 105-30 = 75 degrees CompF onto V = 8kN*Cos(75) = 2.07 kN. Since in the -V direction; -2.07kN. I just would like for somebody to verify these answers. I've...

I have a friend doing an animation of 6 objects under extreme g force. Can anyone offer an opinion on how these objects would look when destroyed by extreme g forces standing on a flat indistructable surface . When will they start to change and be completely obliterated , how would it look? how...

Hi, I just hit my head on the top of my car door as I was leaving my car; the hit hurt my head a lot and I am worried that I received a concussion. However, I read that most concussions require more than 65 Gs of force to be classified a concussion which is why I am wondering if someone here...

Summary: Considering a charged particle moving through a magnetic field, what forces does the particle exert on the magnet that is causing it to deflect? Hi all, probably a dumb question, but what force(s) does a charged particle exert on a magnet as it passes through it's magnetic field and...

Let’s say I bring a closed container full of air into deep space where atmospheric pressure is is near 0. I Open the lid and then the air moves out of the container and into the vacuum of space. What are the forces on the container AFTER the lid has been removed? Does the container move...

Homework Statement: In Figure 3-25, the weights of the objects are 200 N and 300 N. It is considered that the pulleys have no friction and that their masses are negligible. Pulley P1 has a stationary axis, the P2 pulley can raise or lower freely. Calculate the tensions FT1 and FT2, as well as...

How can I measure the levitation forces between the magnets and a type-II superconductor (YBCO superconductor)?

Here's the task: My attempt at a solution (I choose C as an axis): However, the textbook solution says D should be 58.8. What am I doing wrong?

what does it mean that fluid cannot sustain a force that is tangential to its surface.which surface fluids's surface or container? and what does it mean it cannot withstand shearing stress.what's shearing stress and what does it mean here.and why exert force only in direction perpendicular to...

This is not a homework question. I merely am interested in what forces are acting on it.

I don't know exactly where to start with this problem. But I'm going to try this, cos θ= adj/hyp cos 40° = Fx/100 Fx=100 cos 40° =76.60= 77N??

My book states that, '∑Finternal=0∑Finternal=0. But the work done by them may or may not be zero. Why is this true? Edit: How can the work ≠ 0 sometimes?

So as stated, I am calculating the pressure and drag forces on an obstacle, but have trouble with which velocities to take. This is my geometry: http://shrani.si/f/3l/13P/2Tihb3iM/projekt2.png . I am guessing that I have to take pressure just before the obstacle and just after the obstacle and...

Hi there, I am by no means a mathematician, I am currently working on a project to improve the safety of gas distribution systems in multi occupancy developments. I am hitting a bit of a wall regarding converting displacement onto force. I am trying to calculate the stress applied to a point...

Answer says, 'any (x, y) satisfying 2(a^2)x = (x2 + y2)^(3/2)

Okay, say we have two balls(equal mass and size), 1 and 2. #1 has kinetic energy and #2 is at a standstill, they collide. Ignore all friction, heat, sound losses etc.. Now I know that 1 exerts a force on 2, hence doing work, which in turn uses its kinetic energy up. Therefore, 2 speeds up...

Summary: How big is the pulling force acting on a finger tendon(doesn't matter which one, let's say the flexor)? Hello! To get straight to the point, I'm planning on building the "ultimate" monitor stand, and the design I came up with has a part in which there are 3 metal rods, connected via...

The question doesn't specify whether we're talking about translation or rotational equilibrium, so I suppose it's both: In order for the body to have translational equilibrium: 60 N + F2 = 0 F2 = -60N However, in order to have rotational equilibrium: 60 N * 3m + F2 *8 m = 0 60 N * 3m - 60 N...

I tried to apply the chain rule $$X_{ik} = \frac {\partial U}{\partial \xi_{ik}} = \frac {\partial U}{\partial x_{i}} \frac {\partial x_i}{\partial \xi_{ik}} = \frac {\partial U}{\partial x_{i}} $$ and I got the force x-component of the force acting on ##P_i## I guess. but I do not know what...

I'm curious if someone help me understand why the electric and magnetic forces are IN PHASE at right angles to one another? Should they not be 90 degrees out of phase in order to conserve energy? I do understand they are in phase but why? Thank you all for your time. Merlyn.

Let's say you have a box and there is a spring attached to it and the other end of the spring is attached to the wall. If you press the box towards the wall the spring presses back against the box with an equal force. F(push) = 20N, F(spring) = -kd. F(push) - F(spring) = F(net). Which is zero...

Problem Statement: A 2.0 kg cart and an 8 kg cart are connected by a relaxed, horizontal spring of spring constant 300 N/m. You pull the 8 kg cart with some constant horizontal force. The separation between the carts increases for a short time interval, then remains constant as you continue to...

I was reading the following article: https://en.wikipedia.org/wiki/Fictitious_force When I came across this passage: "This led Albert Einstein to wonder whether gravity was a fictitious force as well. He noted that a freefalling observer in a closed box would not be able to detect the force of...

Sorry there, relatively new to this topic. Anyways, from my understanding of the formula, the force is equal to mass times acceleration. So, is it safe to assume that the total force is simply all the forces from the engines added up? (1.7MN^3+23MN^2), while the mass is (2.0^106 kg)^ 9.8m/s^2...

I am very new to physics so I am still learning a lot. Here is my attempt: Find the net force acting on the block : Fnet= Fg+FN so I have to find FN before I can complete the answer. FN = Fg (mg) FN = (0.72kg)(9.8m/s^2) = 7.056 or 7.06 N Fnet = 9.8+7.06 = 16.86 N or 16.9 N To find the...

Work done by conservative forces adds potential energy (by definition of conservative force), and potential energy can only be internal to a system. Thus, conservative forces must be internal to a system. Is this reasoning correct?

$$\sum F_x = T - w_x - f_k = ma_x $$ $$ T = mg\sin(\theta) + mg\cos(\theta)\mu_k + ma_x$$ $$ T = (9.8 \frac{m}{s^2}) \cdot (\sin(41^{\circ}) + \cos(41^{\circ})) + (75kg)\cdot(0.25\frac{m}{s^2}) $$ $$T = 672.91 N $$ Having found the tension force, I can find the work done by the person who's...

Becker et al. 2019, Asymmetry and non-dispersivity in the Aharonov-Bohm effect The paper is open access and published in Nature Communications.

What forces are acting on electron in a circuit? What is the source of such kind of forces? Do electrons act on each other in electric current? If i have an ordinary electric circuit with only one resistor, then if i raise resistance, the electric current goes down. As I understand it happens...

##\sum F_{X} = F - F_k## (The net force, ##\sum F_{X}## is always equal to m.a) ##ma = F - \mu_{k}.F_n## ##ma = F - \mu_{k}.(mg)## [Here ##F_n = mg## when body is on flat surface] ##20(a) = 150 - 0.25(20)(10)## ##\large a = \frac {150 - 0.25(20)(10)}{20}## ##\large a = 5\frac{m}{sec^2}##...

So, I'm working on calculating the tension force in vertical circles-and I understand how to calculate the tension force at different points in the vertical circle (via vector sums). But what I don't really understand is how to interpret this information. What can I further do with these...

I solved this question correctly, however I have a question regarding how I should work with the weight of the firefighter climbing the ladder. When drawing the force diagram for this problem, I should only include forces acting on the ladder, right? Which means I would represent the normal...

Under Newton, gravity is what I term an "invisible magic rope" that pulls you down. Enter Einstein. We do away with the invisible magic rope, and say that space (or space-time) is warped by mass. However, we still have other forces, that (as far as I know, anyway) are "invisible magic ropes."...

m = Particles mass, Omega = Systems angular frequency, v' = particles velocity. Attempt at a Solution: $$ F_{C} = -2m \bar{\omega} \times \bar{v}^{'} = -2 \bar{\omega} \times \bar{p} = 2 \bar{p} \times \bar{\omega} $$ Let $$ \bar{\omega} = \frac {\bar{r} \times \bar{v}} {r^2}, \alpha = \frac...

I'm trying to write up some theory for this experiment I'm carrying out. I'll be changing the radius of the hole at the bottom of the cylinder, and I think the time taken for the cylinder to completely submerge is inversely proportional to the size of the hole. Problem is that I'm stuck at...

I tried to solve it and I got that the forces on the cylinder A are: F_1= 58.8 and F_2=58.8 Cylinder B are: F_3=117.6 and F_4=117.6 Cylinder C are: F_5= 58.8 and F_6=117.6 Can someone help me with this?