What is Rope: Definition and 834 Discussions

Homework Statement Im trying to work out the stress of a fishing line after connecting a fishing line to a pulleyboard and adding 100g weights one at a time onto the fishing line to create strain and stress. I know the formula is Stress = Force divided by area And i have already worked...

Homework Statement [(w^2).b - Tk^2]/Qw = tan(kx - wt + P) This can't be solved for all (x,t) with constant values of w and k Can you explain why this is so please? ive used b to represent the mass per unit length, and T is the tension Homework Equations This is the answer to a...

Homework Statement Jimmy has caught two fish in Yellow Creek. He has tied the line holding the 3.0 kg steelhead trout to the tail of the 1.5 kg carp. To show the fish to a friend, he lifts upward on the carp with a force of 60 N. What is the force of the trout on the carp? Homework...

Homework Statement A bunch of bananas hangs from the end of a rope that passes over a light, frictionless pulley. A monkey of mass equal to the mass of bananas hangs from the other end of the rope. The monkey and the bananas are initially balanced and at rest. Now the monkey starts to climb up...

Find the tension in each rope "torque" 1. A uniform plank of length 2m and mass 30kg is supported by three ropes. Find the tension in each rope when 700N person is 0.5m from the left end. 2. diagram ↑ / |...

Homework Statement A uniform chain of length L, measured in feet, is held vertically so that the lower end just touches the floor. The chain weighs 2lb/ft. The upper end that is held is released from rest at t = 0 and the chain falls straight down. Ignore air resistance, assume that the +...

I have a question on a pulley problem; the problem looks like this: M (10) ...O ------------|... xxxxxxxxxxxx|... xxxxxxxxxxxx|m (2.5) xxxxxxxxxxxx|... With the: O being a frictionless pulley - being solid ground . Being a rope M a mass of...

Homework Statement Determine the tension in the rope during the acceleration of a 5 kg mass along a 30 degree slope. coeffecient of kinetic friction is 0.26 The correct answer is (68 N along the ramp), but I can't seem to get that answer.

First post, so be nice :P Homework Statement A box with mas of 20kg is hanging from a rope on a building site. Calculate tension when: a) Stationary b)Moving upwards at consteant speed of 6m/s c)Moving upwards with accelleration of 6m/s Homework Equations f=ma The Attempt at a Solution I...

A 61.0kg box hangs from a rope. What is the tension in the rope if: (a) The box is at rest? (b) The box moves up a steady 5.10m/s? (c) The box has v_y = 5.10m/s and is speeding up at 5.10m/s^2? The y-axis points upward. (d) The box has v_y = 5.10m/s and is slowing down at 5.10m/s^2...

Homework Statement a man swings from a rope which is 10 feet long. his mass is 80 kg and at the bottom of his swing, he is going 8 m/s. The max tension the rope can take without breaking is 2000 N. Does he make it? Homework Equations Fc = mv^2/r The Attempt at a Solution...

Homework Statement The two blocks, m1 = 3.3 kg and m2 = 4.2, in the figure below are connected by a massless rope that passes over a pulley. The pulley is 12 cm in diameter and has a mass of 2.0 kg. As the pulley turns, friction at the axle exerts a torque of magnitude 0.35 Nm. If the blocks...

Basically, there's a person standing on top of a 24 m tall building, and there's another 24 m tall building right beside the original building. The person is holding a 24 m long rope and is attempting to swing from the top of one building to the bottom of the other. The rope cannot take more...

Any Help would be appreciated Problem 1: A person is to walk across a high wire strung horiziontally between 2 buildings 10.0 m apart. The sag when she is in the exact center of the rope is 10*. If her mass is 50.0kg what is the tension on the rope? Okay I know that the tension...

Homework Statement A truck with a horizontal tow rope pulls a car. The car skis off to the side, so the rope makes an angle of 15.0degrees with the car's direction of motion, and then continues in a straight line. The tension in the rope is 180 N. How much work is done on the car by the...

Homework Statement A 1000kb steel beam is supported by two ropes. Each rope as a maximum sustained tension of 6000N. Does either rope break? If so, which one(s)? http://img101.imageshack.us/img101/3930/diagramgm2.jpg Homework Equations Tension = M cos/sin theta (in this case it is...

a 500 kg piano is being lowered into position by a crane while 2 people steady it with ropes pulling to the sides. bob's rope pulls to the left, 15 degrees below horizontal, with 500 N of tension. ellen's rope pulls toward the right, 25 degrees below horizontal. what tension must ellen maintain...

Homework Statement Calculate the acceleration and the tension in the rope. For your variables use "m1", "m2", "theta1", "theta2" and "g". Assume all surfaces are frictionless, and the pulley and rope are massless and frictionless. http://www.webassign.net/userimages/48539?db=v4net...

An elevator and its load have a combined mass of 1500 kg. Find the tension in the supporting cable when the elevator, originally moving downward at 11 m/s, is brought to rest with constant acceleration in a distance of 43 m. First I found the time it to to decelerate D=(V+Vo)/2 T gave me a...

Homework Statement A 2m long, 600g rope pulls a 10kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.7m/s^2. a.) How much force pulls forward on the ice? b.) How much force pull forward on the rope. Homework Equations The Attempt at a Solution...

A camper hangs a 26kg pack between two trees, using separate pieces of rope of different lengths. What is the tension in each rope? I understand: x = T1cosx - T2cox = 0 y = T1sinx + T2sinx + mg = 0. How can I got about solving for T1, and T2? Thanks!

tension in rope problem. please help! A skier of mass 65.0 is pulled up a snow-covered slope at constant speed by a tow rope that is parallel to the ground. The ground slopes upward at a constant angle of 26.0 above the horizontal and you can ignore friction. Calculate the tension in the...

Want to make sure I'm doing this right... it seems too easy Homework Statement A horizontal rope is tightly tied to hooks between two walls separated by a distance of 5m. A 100N weight is suspended from the middle of the rope and it sags so that the middle of the rope is displaced a...

In my Classical Mechanics class we are reviewing Newtonian Mechanics. He gave a homework assignment with a question that invloves tension and a rope. The question is as follows 2 point-like objects, each with mass m, are connected by a massless, stretchless tope of length l. The...

Homework Statement 13) [20 points] Blocks A, B, and C are placed as in the figure and connected by ropes of negligible mass. both “A” and “B” weigh 25.0 N each, the ramp-angle q = 36.9 and the coefficient of kinetic friction between each block and surface is 0.35. Block C descends with...

A wire rope is stretched horizontally between two opposing hydraulic cylinders. One cylinder pulls to the left with a force of 100 pounds, the opposing cylinder pulls to the right with a force of 150 pounds. What is the force imparted to the wire rope? Please show me how this is calculated...

Homework Statement An old oaken bucket of mass 7.25kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, and you pull horizontally on the end of the rope to raise the bucket slowly a distance of 6.00m. a.) How much work do you do on the...

Homework Statement http://server7.pictiger.com/img/480530/other/forces.png http://server7.pictiger.com/img/480530/other/forces.png I would like to know the forces applied on the quadrant block as shown in the pic. Is there an equivalent force I can take for the whole quad? The block...

Homework Statement An athlete swings a 5 kg ball horizontally on the end of a rope. the ball moves in a circle of a radius .800m at an angular speed of .500rev/second. if the maximum tension the rope can withstand before breaking is 100N, what is the maximum tangential speed the ball can...

Homework Statement A car is driven 100 km west and then 95 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)? ________ km ________ ° south of west Homework Equations none? I apologize if I am overlooking any equation, but there are no...

We increase the tension in a rope keeping the frequency of oscillation at the end of the rope the same. What effect does ths have on the wavelength of the wave produced? My attempt If the tension of the rope is increased and the frequency is kept constant then the speed of the wave will...

Homework Statement The two blocks are connected by a heavy uniform rope with a mass of 4.00kg. An upward force of 200N is applied as shown. a.) What is the acceleration of the system? b.) What is the tension at the top of the heavy rope? c.) What is the tension at the midpoint of the rope...

Homework Statement let's say we have 2 blocks as shown. []->T1----T1-<--[] both blocks are joined by a common rope having a tension T.lets say when the blocks are pulled apart, the tension acts in the direction on the blocks as shown in figure as they try to prevent the sting from...

Tension is the force exerted by a rope on the body, when a rope(massless) connects 2 bodies on a plane, like 2 blocks , which side is direction of tension? Tension always pulls a body or rope, never pushes the body or rope. also, r bodies conected with a massless cord assumed to have...

Homework Statement A 24 kg beam of length 2.4 m leans against a smooth wall. A horizontal rope is tied to the wall and holds the beam on a frictionless floor. The beam makes an angle of 55 degrees with the floor. WHat is the tension in the rope? (The rope is on the floor. Homework...

If Earth could be considered the only body acting gravitationally on a length of rope, if the rope say a 1 mile length, is aligned in a straight line with the center of the Earth in some orbit, when the rope is free, will it tend to curve to the shape of the orbit, or will it fall in on itself...

Homework Statement Two lengths of rope, one 30cm long and the other 40cm long, are attached to a ceiling at a distance of 50cm apart. The other ends of the rope are joined together and attached to a basket weighing 2kg which hangs freely. Determine the tension in each rope. (The...

Oliver (m=90.0 kg) uses a 4.60 m long rope to pull Jordan (m=53.6 kg) across the floor (μk=0.200) at a constant speed of 1.14 m/s. Jordan signals to Oliver to stop by "plucking" the rope, sending a wave pulse forward along the rope. The pulse reaches Oliver 149.0 ms later. What is the mass of...

Homework Statement A block with mass 'M' is attached to the lower end of a vertical, uniform rope with mass 'm' and length 'L'. A constant upward force 'F' is applied to the top of the rope, causing the rope and block to accelerate upward. Find the tension in the rope at a dstance 'x' from the...

I have a question that popped into my head the other day and I haven't been able to find an answer for it. Keep in mind I'm not a physics student, so if it's an easily solved question, I'm sorry. The experiment I am about to describe is very impractical, but it was my original thought, and I...

consider a pulse traveling down a stretched rope. what makes the pulse to travel in a particular direction (let say to the right) and not the other?

[b]1. picture of problem: http://img.photobucket.com/albums/v223/lilaznbabe/4_56.gif (a) What minimum force F is needed to lift the piano (mass M) using the pulley apparatus shown in Fig. 4-56? (Enter your answers in terms of some multiple of Mg.) ____ Mg (I got .5) (b) Determine the tension...

Homework Statement Jo decides to try bungy jumping while on an overseas holiday. A rope that could be easily stretched was tied to her ankles and she jumped off a bridge high above a river. Model this as an ideal spring with a spring constant of 20N/m. Jo has a mass of 60kg and, after she...

Two blocks are connected by a massless string and are held in position by another massless string along a frictionless incline (as shown in the figure). Let M1 = 52.0 kg, M2 = 30.0 kg, and q = 11°. Calculate the tension in the string connecting the two blocks. so..first i am going to use...

Hallo to all members, this is my first post. Homework Statement A short Laser flush with the Energy E = 1J hits a ideally reflecting mirror, with mass m_m = 2 * 10^(-5) kg . The light has a wave length of 696 nm. The mirror is hanging on a rope with the length l = 0,1m. Homework Equations...

A block of mass 'M' is pulled along horizontal frictionless surface of a rope of mass 'm'. Force 'P' is applied at the end of rope. Find the force which the rope exerts on the block. My attempt: The total mass = M+m Force P=(M+m)*a ------------ (i) Force exerted on block = ma a=P/(M+m)...

You are locked in a 50'x50'x50' room which is on 100' stilts. There is a small window near the floor on one side (too far from the stilts to reach), with a small hook embedded in the floor beside it. In the centre of the room hanging from the ceiling are two 50' ropes. You have no tools...

I recently became aware of John Baez's crackpot index. http://math.ucr.edu/home/baez/crackpot.html What follows is a rough draft of an attempt to score as high as possible on that index. If anyone cares to do so, I would like to see edits to it in order to increase the score. Rope Theory...

Homework Statement A hanging weight with a mass of 25kg is suspended from a rope from a wall. The rope with the weight is wrapped around a pully which is also attached to a different wall. The angle that rope a(rope with mass) makes with the wall is 41 degrees, and the angle of the other rope...

Hi. i need to calculate the potential energy of a rope hanging from the cieling. the rope is uniform. the mass of the rope is M. the length of the rope is H. the bottom tip of the rope is the origin of the coordinate system. i'm *not* supposed to do it by treating the rope as a dimensionless...