Tension Definition and 1000 Threads

1. Homework Statement The magnitude of the force F is slowly increased. The direction of the force remains the same. What is the magnitude of the force F at the moment the block looses contact with the floor? Homework Equations fnet=m*a[/B]The Attempt at a Solution fnety =...

Homework Statement A force F is applied horizontally to a block A of mass mA = 0.600 kg so that it slides on the floor with acceleration g/3. Block B of mass mB = 0.200 kg rests on top of A, but is kept in place by a cord which is tied to the wall at 45.0°. The coefficient of kinetic friction...

Hi, I am interested to find out the answer to whether high tension or low tension strings on badminton/squash rackets give more power/force. There are so many conflicting sources on the internet I wanted to see if it can be answered in a concrete way by physics. So, some sources are saying that...

Homework Statement We have two very long wires, each with the same mass of 20 grams per meter. They are hung from the ceiling with two identical wires. When they both had the same current flowing to the opposite directions, they created the same angle. We double the current in one of them, is...

Homework Statement You spin a 1.20 kg mass at the end of a 1.10 m string. The tangential velocity is 13 m/s. What is the tension in the string? Homework Equations x = angle string makes to the vertical L = string length r = L*sin(x) T*cos(x) = mg (because the sum of the vertical forces has...

I know how to solve this problem with x and y components but how do I solve it with the equilibrant/resultant method? I don't understand how you can make a triangle with both F1 and F2 when in the diagram it looks like the magnitude F1 is only partially represented? Why are we just ignoring the...

Homework Statement [/B]Homework Equations [/B]The Attempt at a Solution In the second question at 5:32,why doesn't the block have a spring force.In FBD of 2nd block it should have been mg-(T+kx)=ma right?

Homework Statement Block B is positioned on a fixed incline. Attached to block B is a massless, ideal string that runs over a massless ideal pulley and is attached to a hanging block block A at the other end. The mass of block A is 2 kg and the mass of block B is 10 kg. The angle of the incline...

Homework Statement A meter stick with a mass of 260 g is supported horizontally by two vertical strings, one at the 0-cm mark and the other at the 90-cm mark A) What is the tension in the string at 0 cm B) What is the tension in the string at 90 cm C) The string at the 90-cm mark is cut. What...

Homework Statement The tension in the skin of the left ventricle of heart is 4.90 N/m. A cut is made on the left ventricle during surgery. How many stitches must be used to repair the cut? Each stitch will safely support a tension of 0.4 N. Homework Equations Surface tension = force/length...

Hi everyone. I found this image online that made me question a couple of things that might be a bit humiliating to ask: I always thought that tension is simply a pulling force, meaning that the mass is suspended because the tension force pulling the mass is equal to the weight force of the...

Question One What would be the effect on the following if the load torque is increased and the speed maintains constant (give reasons for your answer): A. the tension in the tight side of the belt B. the tension in the slack side of the belt C. the power transmitted. Not sure on how to solve...

Hi .how can i calculate the molar volume and surface tension of nanoparticles ? shoud i have to calculate? or these parameters is available in tables or sth?

Homework Statement A mass m, at one end of a string of length L, rotates in a vertical circle just fast enough to prevent the string from going slack at the top of the circle. Assuming mechanical energy is conserved, the tension in the string at the bottom of the circle is: a) 6 mg b) mg +...

A mass m = 0.15 kg is attached to a massless string and rotates at constant speed v = 4 m/s in a horizontal circle of radius 2 m. The tension T (in N) in the string is: (a) 1.1 (b) 1.9 (c) 2.4 (d) 3.3 (e) 4.9 I would assume that first I calculate the centripetal acceleration by using v^2/r =...

Homework Statement A grid made of ropes is suspended by its four corners with strings tied to four different points on a building. Three of which are fixed and fourth is attached to a pulley which is in turn fixed to the building. Given data : Grid mass is 25 kilogram suspended at a height of...

Homework Statement You are presented with a circumstance in which three children are playing on a frozen pond. The three small children of mass 20.00 kg, 24.00 kg, and 16.00 kg, respectively, hold hands, and are pulled across a smooth frozen pond by a larger boy on skates, who pulls a...

Homework Statement Block B hangs from Block A by a Rope 1. Rope 2 hangs below Block B. Each block has a mass of 1.0 kg. Each rope has a mass of 250 g. The entire assembly is accelerating upward at 3.00 m/s^2 by force F. A. What is F? B. What is the tension at the top of Rope 1? C. What is the...

Homework Statement Homework EquationsThe Attempt at a Solution Trying to answer it before solving it, The maximum tension force is mg, so the average has to be less than this. Hence, the option (a) and (c) are not correct. ## T = mg \cos \theta ##, where ## \theta ## is the angle between...

What I've attempted to do is resolve vertically and horizontally: T1sin(30)+T2sinΘ+T2=9g T2cosΘ=T1cos30 After that... I'm completely stuck. Any help would be appreciated, I've spent so long on this I bet I'm just missing one simple thing. Thanks in advance

Homework Statement A box weighs 12.6kg and it is dragged with a rope(it weighs 1.4kg and the length is 60cm).The force dragging the box is F=80N.The coefficient of kinetic friction is 0,5. What is the tension of the rope in the middle?(Answer:17N) Homework Equations No revelant equations The...

A uniform 41.0 kg scaffold of length 5.8 m is supported by two light cables, as shown below. A 78.0 kg painter stands 1.0 m from the left end of the scaffold, and his painting equipment is 1.6 m from the right end. If the tension in the left cable is twice that in the right cable, find the...

Hi, I have a homework and I kind of stuck on it. Here is the question: A 17 kg object on a rough ramp (coefficient of friction = 0.35N, ramp's angle = 25 degrees) is connected to a vertically hanging object via a pulley with I = 23 kg m^2 and the radius is 0.25m. The hanging object had weight...

Homework Statement A worker is going to attempt to pull a 90-kg box across a level floor by a rope that makes an angle of 35° with the floor. The tension in the rope is gradually increased until the box just starts to move. If the coefficient of kinetic friction is 0.36 and the coefficient of...

Homework Statement A second harmonic standing wave has the known quantities of Amplitude (max y at antinode) A, maximum velocity (y=0 at antinode) v, string length L, tension in the string T. Given that we know that it is second harmonic, we can assume that λ = L How can one determine the...

Homework Statement Homework Equations F = mv^2/R The Attempt at a Solution I got that T1max = T2max because when i plugged into my formula for centripetal force, i get that both ropes end up with mv^2/R which means they are equal everywhere... Is this correct?

Homework Statement Homework Equations F = ma The Attempt at a Solution So , i drew a freebody diagram for the 6k gram block, and the tension to the right of I call T2. Therefore, the force of gravity component parallel to T2 is (6*9.8)sin30. Therefore, T2 is equal to this value which i...

Homework Statement Homework Equations Weight = Tension in y direction?? The Attempt at a Solution I thought that W = the tension in the y direction of the two cables so that T2y and T1y are both 20 N each. Thus, i calculated that the tension in AC is 33 N ( cos(53.1) = 20/T1 --> T1 = 20/...

Homework Statement Homework Equations Ook, so I'm really bad at physics, and i need someone to help explain why the answer is P=T+25 N I thought it is P+T = 125 The Attempt at a Solution Since the system is in constant velocity, then Fnet = 0 so that P + T + W = 0 Why isn't it P + T + 125...

Homework Statement Where does T2cos(theta) come from ? Isn't mv^2/R the centripetal force which is the tension of rope 2? Homework Equations Fc = mv^2/R 3. Solution Wait! The horizontal component of the circle is the centripetal force? So that part is mv^2/R? I got confused and thought...

Homework Statement Homework EquationsThe Attempt at a Solution I have the solution of the questions and I don't understand why the tension in Q7 is assumed to be uniform throughout the rope, however the tension in Q7 is not the same throughout the rope (i.e. for a segment dl, the tension in...

Hi everyone, I have attached a sketch which may help understand the question I have. I have a hinged flap which hangs vertically (hinge at top). The flap weight is 10kN and it is 1.8m tall (uniform mass). At the bottom of the flap is a lifting eye. 2.5m away and 0.3m above height of the hinge...

Homework Statement [/B] A rope with uniform mass distribution is attached to a spaceship. At the end of this rope, there is a mass, m. The length of the rope - l. Point A - where the rope is attached to a spaceship Point B - in the middle of the rope. The whole system moves with the same...

Considering the figure, (a) what is the tension along the wire 1? (b) What is the tension along wire 1 immediately after the wire 2 is cut? Now, if I put myself in a reference frame with y-axis along ##\vec{g}## (with inverse direction) the part (a) is $$\begin{cases} T_1\cdot cos\theta -mg=0...

Homework Statement The speed of the pendulum bob remains constant as it travels around the circle (a) Over one complete circle, how much work does the tension force F do on the bob? (i) A positive amount; (ii) a negative amount; (iii) zero. (b) Over one complete circle, how much work does...

Homework Statement State the boundary condition which must be met at a point where the string of question 2 is fixed. Hence find the real standing wave solutions to the wave equation, and determine the allowed oscillation frequencies, when such a string of length ##L## is fixed at its ends...

Homework Statement I solved the first part of the problem correctly. Here there is the second part: assume that m1 is large enough so that the rope starts to slip and the masses start to move. What is a, the magnitude of the acceleration of the masses after sliding has begun? Hint: Just when...

Homework Statement A 2 kg tetherball swings around a vertical pole attached to two ropes each at a 30 degree angle from vertical. Each supporting rope is 1.5 meters long, and the ball travels at 8 m/s long. Homework Equations The question doesn't ask what they're looking for, so I assume they...

Homework Statement A 5000 kg car rests on a 32° slanted ramp attached to a trailer. Only a cable running from the trailer to the car prevents the car from rolling off the ramp (the car's transmission is in neutral and its brakes are off). Find the tension in the cable and the force that the...

Homework Statement A rope of uniform mass density is passed above the top of a fixed pipe of circular cross section. Points B and C - the points where the rope loses contact with the pipe. Points A and D - at the ends of the rope The length of the segment AB = 2d The length of the segment CD...

Its getting hard for me to deal with the problems related to tension and reason behind this is not clear understanding of the concept so i have few questions on this. What causes tension in a rope/string(i think its related to electromagnetism, but i am not getting the clear idea behind this)...

Homework Statement When the motor in the figure below lowers the m = 1200kg mass, it produces a tension of 1.15E+4N in the cable on the right side of the pulley. The pulley has a moment of inertia of 71.3kgm^2 and a radius of 0.794m. The cable rides over the pulley without slipping. Determine...

I have no idea where to begin. Any help would be appreciated. Once upon a time there was a terribly wicked King who had a daughter who was very beautiful. The daughter was in love with a handsome prince, and before long the prince and the princess had become inseparable. The King, however, was...

I attached an image of the problem but here's an explanation. A 5.50kg mass is hanging from a rope that is attached to two other ropes. Rope 1 is 40 degrees below the negative horizontal and Rope 2 is 40 degrees to the right of the positive vertical. Find the tension in rope 1.I understand...

Homework Statement Two objects of 2.8kg and 4.2kg are connected by an inextensible cord. The object's at rest on a plane inclined 22°, determine the object's acceleration and tension in the cord if a 60N force is used to push the object downward. Homework Equations ΣFnet = ma the plane is...

1. The problem statement, all variables, and given/known data A block of mass m1 = 2.00kg is attached to a rope of length L1 = 0.50m, which is fixed at one end to a table. The mass moves in a horizontal circle supported by a frictionless table. A second block of mass m2 = 1.25kg is attached to...

Hello Everyone, I was learning about prestressed concrete and how it works. Concrete is very strong under compression but weak under tension. In the case of prestressed concrete, the steel bars are pulled and become elongated. How much do the steel bars elongate when they are pulled? The...

Homework Statement A constant force F pulls a rope vertically upward. The rope is lifting a block of mass M, to which it is attached. The rope is of uniform composition, and has mass m and length L. Find the tension in the rope at a position y along its length. (The tension will not...

Hello, (I'm not sure if this is the right place to ask.) I'm taking AP Physics 1, having never taken physics before. In class we are doing forces with Newton's Laws, and a little bit of free body diagrams (if I remember the name correctly). For homework, we got a worksheet with questions about...

Homework Statement Problem image: https://prnt.sc/gvhjso In this case I have to find the reaction forces at the point E (the Fx, Fy, and the Moment at point E) by using the given data. The 20kN forces at the load AC are concentrated, and are 1.8m far from each other. The tension of the cable is...