Rope Definition and 824 Threads

Long time no post but the following came up in a recent coffee time discussion: If you pull on a rope which is fixed to, say, a wall, and the rope breaks, what are the forces on each end of the rope. (We can assume the rope has some elasticity.) Putting it in other words, in equilibrium...

Homework Statement 1) A box of mass 42kg sits on the top of a ladder. Neglecting the weight of the ladder, find the tension in the rope. Assume the rope exerts horizontal forces on the ladder at each end. Homework Equations m1g – T = m1a The Attempt at a Solution T = m1g - m1a...

Homework Statement the rope passes over a pulley suspended from the ceiling, and the man holds the other end of the rope in his hands. What is the tension in the rope and what is the force supported by the pulley.Homework Equations 3 theories of NewtonThe Attempt at a Solution since its in...

I've worked through this problem a few different ways now and each one gives me different answers and I am looking for some guidance as to which is correct: Four blocks of mass m1=1kg, m2=2kg, m3=3kg (very original right?), and unknown mass m4 are on a frictionless surface (pic attached)...

Well, its been about two years since I had to do a physics problem so I need some help. A person plans on swinging from a 30 meter long rope from a bridge. They will tie the rope on to the center of the bridge then stretch it out tight and jump off. They'll be at the same height that the rope...

Homework Statement A pulley system has an efficiency of 71.5 percent. How much of the rope must be pulled in if a force of 641 N is needed to lift a 160 kg desk 2.51 meters? Homework Equations IMA = De/Dr MA = Fr/Fe Efficiency (%) = Wo/Wi Efficiency (%) = MA/IMA I have absolutely...

Homework Statement A rope of negligible mass passes over a pulley of negligible mass attached to the ceiling. One end is held by student A (70 kg) who is at rest. The other side has student b (60 kg). I need to explain why or why not student b can lift student a off of the ground if he...

So I am again stuck on a question I have been provided. The question is: Draw a FBD for each monkey. For each monkey, determine the rope tension that would allow the monkey to begin accelerating in the expected direction. (on a side note this is a pulley situation one monkey is 22kg and the...

Friends: If you take a rope and fix the top end and allow the rope to swing, then it is just a pendulum and the period of swing is widely known (and on wikipedia) as approx. T = 2*pi*(L/g)^0.5 where L is the length of the pendulum and g is gravity. My question is: What if I take both ends...

Hi I'm wondering, if I had a mass of 10kg and I dropped it 10 metres, how would I work out how much force is exerted on a rope? Thanks David.

please see attached drawing. I am trying to understand how this would work. Imagine a vertical cylinder of diameter "D". I would like to tie a mass M to it, using a rope. what is the tension "T" that is required on the rope? I assume the force required will depend on the coefficient of...

Just looked at a video of the atlas rope ascender (google it) and thought it was pretty cool. However, I feel as though using a more "capacitive" approach and taking advantage of the fact that ascensions would not occur frequently could allow for the use of a system that slowly recharges over...

1. So this is a very basic question on tension, i assume, however every example provided in my book shows the tension within two cords. I can't seem to grasp the correct way to do this... Homework Statement A 2 kg block is suspended from a single rope. A horizontal force keeps the cord at...

Homework Statement A rope is stretched between two vertical supports. The points where it is attached (P and Q) are fixed. The linear density of the rope, u, is 0.6kg/m, and the speed of the transverse waves on the rope is 12 m/s. a. what is the tension in the rope? b. with what frequency...

I'm still struggling with spacetime curvature. I want to know about the spacetime intervals in the following scenario: An apple is cut loose from a tree, but is still attached by an unstretchable rope that is measured to be 10 meters by the tree observer. (I'm ignoring all but relativistic...

Mhmm okay thanks, so if the rope had a mass, the two people would exert a force to make sure the rope didn't fall.. But now what about this (still can't solve a tension problem); a 2.00-kg textbook rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley...

Hi, I'm a bit confused with determining the tension in a rope. For example, when two people are puling on a rope, one with a force F and the other with a force 2F, how can you calculate the tension? I know the tension at any point in a rope is the magnitude of force acting at that point, and...

This isn't a joke, I really don't know if this is right or wrong. Please let me know if this is wrong so I can learn what I am not getting right. Homework Statement Three different sets of boxes are being pulled along frictionless surfaces attached to a rope that ends with the rightmost box...

Homework Statement A uniform rope of mass λ per unit length is coiled on a smooth horizontal table. One end is pulled straight up with constant speed v0 Find the force exerted on the end of the rope as a function of height y and find the power delivered to the rope. Homework Equations...

Homework Statement A rope is 10.0 m long and is attached at points A and B, which are at the same elevation 6.0 m apart. If a 50.0 kg mass is attached to the rope 4.0 m away from point A, what is the tension in the two segments of the rope? Homework Equations W = ma ƩFy = 0 = T1 + T2 - W...

Homework Statement A rope of 5m is fastened to two hooks 4m apart on a horizontal ceiling. To the rope is attached 10kg mass so that the segment of the rope are 3m and 2m.Compute the tension in the string Homework Equations Sine rule The Attempt at a Solution I get stuck at the...

1) A rope 5m is fastened to two hooks 4m apart on a horizontal ceiling. To the rope is attached a 10kg mass so that the segment of the rope are 3.0m and 2.0m.Compute the tension in the string. 2) A uniform pole 7m long weighing 10kg is supported by a boy 2m from one end and a man 3m from the...

In my physics class we did a lab where we attached one end of a string to a .5 kg cart and the other end to a force meter which was all on a ramp. As we increased the angle of the ramp, the tension increased proportionally until the angle reached 45 degrees. From 45 degrees to 90 degrees, as we...

Homework Statement a block of mass 100 kg is being moved steadily by pulling on a rope attached to the block making an angle of 30 degree with the horizontal. if the tension of the rope is 120 N, what is the coefficient of friction? Homework Equations T- Ff = ma F= μRThe Attempt at a Solution...

Homework Statement The rope of a swing is 3.00 m long. Calculate the angle from the vertical at which a 80.0 kg man must begin to swing in order to have the same KE at the bottom as a 1420 kg car moving at 1.51 m/s (3.38 mph). Homework Equations K= (1/2)mv^2 U= mgh ma=v^2/r=F The...

There was a problem on my test yesterday that delt with two boxes being pulled to the right which where both conected to one another by a rope. I don't remember if there was any friction and I don't remember what was given but one of the questions was... Will the tension between the boxes be...

Did this problem out, but answer doesn't look right. Homework Statement Find the tension of the rope. M=37.7kg Coefficient of kinetic friction=.244 Rope is at an angle of 22.2° above the horizontal Pulled at constant speed, meaning a=0Homework Equations I figured that... ƩFx=Tcos∅-μkN=0...

Homework Statement A 7.3 kg object hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, the rope makes an angle of 7.8 degrees with the vertical, as shown in the figure below. (attached) What is the acceleration of the...

Homework Statement On 20 degree incline, there are two blocks tied together with a rope, sliding down. the block on the top has mass of 2.0 kg (m1) and u_k1(coefficient of kinetic friction for block 1) = .30 the block on the bottom of the incline has mass of 3.0 kg (m2) and u_k2 = .20 What is...

Homework Statement A 72.8 kg ice skater is moving at 5.01 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.765 m around the pole. The acceleration of gravity is 9.8 m/s2 . Find the force exerted by the rope on...

Homework Statement A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 130.0 N at an angle of 15.0° above the horizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and...

1. I don’t have a diagram to add, but it is a simple system. 1 pulley at the top. On the left is a bucket with a person in it. On the right the rope hangs and the person(in the bucket) is pulling down on the rope with unknown force. The system is moving at constant velocity. Problem...

Homework Statement A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 514 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the...

Same Rope, DIFFERENT tensions? Homework Statement Consider the system shown with m1 = 20.0 kg, m2 = 12.5 kg, R = 0.200 m, and the mass of pulley M = 5.00 kg. Object m2 is resting on the floor, and object m1 is 4.00 m above the floor when it is released from rest. The pulley axis is...

Homework Statement Homework Equations f = ma The Attempt at a Solution I need help with all parts of this problem, but here are my comments on part a and c: a) the block has its normal force vector pointing up and its weight vector pointing down. the tension of the rope is pulling it to...

Homework Statement I just want to confirm this. A block m1=10 kg is hanging from a rope. the rope is attached by a frictionless pulley to a block m2=5 kg on a frictionless slope with a 40 degree angle from the ground. Find the tension in the rope and the acceleration of the first block...

1. Suppose a rope of mass m hangs between two trees. The ends of the rope are at the same height and they make an angle ! with the trees. I believe the tension at either end of the rope is T=(mg)/(2cos(theta)) but I don't know how to solve the for the middle. The only way I can think of...

Homework Statement "A pail is suspended from a vertical rope, wrapped around a winch, so that the pail can be raised or lowered inside a well. The weight of the emply pail is 4 N. Suppose the pail is descending vertically with increasing speed. Is the tension in the rope larger than...

Homework Statement A very heavy sack is hung from a rope and pushed sideways. When the sideways push is 220N the rope supporting the sack is inclined 18 degrees to the vertical. A) Calculate the tension in the rope B) Hence find the mass of the stack Homework Equations The...

***Excuse the pluralization error in the title*** Homework Statement I attached a picture below...Homework Equations sin^2(theta)+cos^2(theta)=1 a^2+b^2=c^2 Vector properties Trig identities The Attempt at a SolutionI am familiar with trig identities and vector properties, but I can't...

hey, This question is about a system where one mass is on an incline and another hanging of it. They are connected with a rope.. Its a classical mass rope mass problem. My reasoning was that since the mass hanging of the cliff is pulling on the rope with a force of mg, the rope will be...

Homework Statement I really didn't plan to post this in hopes of finding a particular solution, but rather to learn what to do if a problem contains a pulley, a tension and a rope with mass, or any problem that had mass of rope and a tension. My professor and I tried working out this...

Homework Statement A block is pulled up by a rope. The block has an acceleration of 5 \;m/s^2. The mass of the block is 5 kg. What is the tension in the rope? Homework Equations T = mg a = \frac {F_{net}}{m} The Attempt at a Solution Not sure which equation I should use in this...

Homework Statement Homework Equations The Attempt at a Solution I don't know how to find Tension (T). I think the Tension contains 2 parts. First part is the rod near the center, it exerts a force on P toward the center. Second part is on the other side of the rod, which...

1. Two blocks made of different materials connected together by a thin rope, slide down a plane ramp inclined at an angle θ to the horizontal (block B is above block A). The masses of the blocks are mA and mB, and the coefficients of friction are μA and μB. If μA < μB, find the tension in terms...

Homework Statement Calculate the force that the man (weight 70 kg) should exert on the rope to stay in balance. (answer = 137,2 N) [PLAIN]http://img651.imageshack.us/img651/7682/oefkoen.png Homework Equations Like I see, there are two ropes who are in equilibrium. In each rope...

Homework Statement How do i find the tension in a cord. If two equal forces,say F1 and F2, act on both ends of the cord the tension is F1=F2. What if the forces are not equal? If a force A pulls one end of a rope, and a force B, pulls the other end and A is not equal to B, what is the tension...

I am new here so if any other info is needed lmk. :bugeye: Ok I have been working on this problem for a very long time and there is a possibility that my book's answer is wrong. If that's the case I am going to be very mad ahaha. I put up the diagram and my work is after the passage. I don't...

Hello Friends. I have a question that may have to do with wind lift and other effects. I have two wooden poles set into the ground. Both poles are upright and has a height of H feet. The horizontal separation of these poles is S feet. Let's say I attach a rope in between these poles so that...

My father and I were just having a conversation. The scenario he presented to me was this; There are 2 ropes fixed on 3 points, like so: A--------------B------------------------------------------------------------------------C The distance of AB is approximately 10 meters, while BC is...