Rope Definition and 835 Threads

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...

Jane wants to swing on a rope across a river. What minimum speed does she need to make it across, and once she's across, what minimum speed does she need to make it back? Here's what's given: mass = 47 kg horizontal wind - call it F - (opposite to her swing) = 120 N horizontal distance (D) =...

Determine the tension in the support rope and the forces of the hinge on he uniform rectangular mass below. The length on the rect. is 12 and the height is 6m. The angle that the rope makes with the rectangle is 30 degrees. ____ I broke up the hinge forces into x and y components...

I have a couple questions that I can't figure out regarding the following question. The picture pertains to the question. http://img81.imageshack.us/img81/8229/physnd4.jpg Three blocks of mass m1 = 4 kg, m2 = 5 kg and m3 = 8 kg are connected by strings which pass over two ideal pulleys as...

Hi everyone, My question is as follows: A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 190N and is 2.9m long. What is the tension in each rope when the 690N worker stands 1.9m from one end? I know the sum of the forces has to...

If a rope of mass 10 kg is connected to a hook on the top and is supporting a mass of 15 kg at the bottom, what is the rope's tension?

I have a few questions: 1) Does the weight of the rope (if it is significant) affect its tension? 2) Look at this picture: http://i14.tinypic.com/3ynt3cg.jpg 3) If an object sits at rest on a record player's record that is moving around, where is its frictional force?

A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30.0° with respect to the horizontal (see the figure below). The total weight of the sled is 470 N. The tension in the rope is 250 N. How much work is done by the rope on the sled...

A rope is wound around a cylinder of mass 4kg and with moment of inertia I=0.020 kg.m^2 about an axis along the cylinder axis, see attachment. If the cylinder rolls without slipping, (a)what is the linear acceleration of its mass center? (b)Repeat for the case where no friction force exists...

Question: (Please look at the attachment picture of the diagram) Consider a rope subjected to a pulling force on its two ends as shown. The rope is stationary. An arbitrary point P divides the rope into a left-hand segment L and a right-hand segment R. 1. Assume that segment R exerts a...

SO i basically need to know what the graph of velocity vs time is..and I'm supposed ot do this numerically using maple...though if anyone has some basic intuition about what the graph should look like, even that would be nice. Anyways, I'm unsure of how to graph it Basically i have x_dot^2...

A piece of nylon rope used by a mountaineer extended by 1.5 m when carrying the load of the 80 kg mountaineer. If the total length of the rope is 50 m and its diameter is 10 mm, determine the Young’s of this material. If the Poisson’s ratio of nylon is 0.1, determine the change in the diameter...

A man with mass 70.0 kg stands on a platform with mass 25.0 kg. He pulls on the free end of a rope that runs over a pulley on the ceiling and has its other end fastened to the platform. The mass of the rope and the mass of the pulley can be neglected, and the pulley is frictionless. The rope is...

I have a simple question to resolve a dispute at work. If I have two opposing forces connected by a rope, applying 50 lbs of force in opposite directions, do i have 50 lbs of force on the rope or do i have 100 lbs of force? (of course assuming no friction and what not)

A steel rope in a cole mine should lift a load of 3500 kg from an underground level of -500 m. The rope is made from steel wire rod. The allowed stress in the steel rope is 60 N/mm². a) Calculate the necessary section area of the rope and the necessary number of wire rod strands in the steel...

If a man, weighing m1g is tryingting to climb up or down a rope, and the max tension T that the rope can withstand is 2m1g/3, then find the maximum speed and acceleration with which the man can climb without breaking the rope. My work: 2m1g-m1g=m1a =>a=-1g/3 doesn't this mean that the...

I would like an aid in the following problem(a tip): Find the equation of motion of a homogeneous rope, knowing that the tension is not more constant and that each element of mass carries through only vertical displacements. It does not make the approach of small displacements and considers...

Mass 1 = 10.0 kg Mass 2 = 3.00 kg The pulleys and rope are massless, and there is no friction. What is the tension in the rope? What is the acceleration of mass 1? If my thinking is correct, the tension is half the weight of mass 2 (14.7 N), and the acceleration of mass 1 is 1.47...

Question Details: A cowgirl ties one end of a 10.0-m-long rope to a fence post and pulls on the other end so the rope is stretched horizontally with a tension of 140 N. The mass of the rope is 0.800 kg. a) What is the speed of transverse waves on the rope? b) If the cowgirl moves the...

Hey there all of you. I am doing some studying for my final for physics and i have come across this question. I thought it was easy but it is not working that way. The question is. A 4kg block (held by a block) is accelerating down at 3 m/s/s, what is the tension of the rope? So I am...

http://www.olemiss.edu/mathed/geometry/tight.gif To determine the shortest rope that can be wrapped around the two circles any ideas? i have forgotten everything about geometry. My nephew asked me this

Hi, fellows ! In an arrangement of 2 slinding blocks connected by a cable (rope). I can state the blocks position and their velocity as a consequence. On the other hand, i can't figure out the cable velocity...which concept should I apply for ? VB=18in/s > (Info) VA= 27 in/s > (found)...

Two point-lie objects, each with mass m, are connected by a massless rope of length l. The objects are suspened vertically near the surface of Earth, so that one object is hanging below the other. Then the objects are released. How can I find the tension in the rope? I know there 3 force...

1: Determine the escape speed of a rocket on the far side of Ganymede, the largest of Jupiter's moons. The radius of Ganymede is 2.64 X 10^6m, and its mass is 1.495 X 10^23 kg. The mass of Jupiter is 1.90 x 10^27 kg, and the distance between Jupiter and Ganymede is 1.071 X 10^9m. Be sure to...

does a pendulum hanging on a rope has any normal force??

On a hot summer day a young girl swings on a rope above the local swimming hole. When she let's go of the rope her initial velocity is 2.65 m/s at an angle of 35.0° above the horizontal. If she is in flight for 1.30 s, how high above the water was she when she let go of the rope? can anyone...

A uniform sphere of mass m and radius r is held in place by a massless rope attached to a frictionless wall a distance L above the Centre of the sphere. Find the tension in the rope and the force on the sphere from the wall. I tried to get a picture, but it is apparently too big to host...

Hi all, I was hoping for a little help with this problem. I already have the solution but I don't understand how they got the answer. The question is: A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope. The rope is inclined at 20.0° above the...

Ok I am new this forum so hello to all. Here is the problem that I've been working on. Is this right or wrong and what is the right answer? Two blocks are connected by a rope that wraps around a pulley. A force of 50 N acts on the 5 kg mass at an angle of 36 degrees. 1. what is the...

Ok, I already posted this a few days ago but I am bringing it back because i don't quite understand a man sits in a bosuns chair that dangles from a massless rope, which runs over a massless frictionless pulley, and back down to the mans hand. The combined mass of the man and the chair is...

A uniform rope of mass 'i' per unit length is coiled on a table, one end s pulled straight up with constant speed Vo. a. find the force exerted on the end of the rope as a function of distance of the top of the rope above table (y). b. compare the power delivered to the rope with the rate of...

How much tension must a rope withstand if it is used to accelerate a 1800 kg car vertically upward at 0.60 m/s2? could someone tell me how to start this problem? thanks so much!

How do you solve this problem? Arlene is to walk across a high wre strung horizontally between two buildings 10.0meters apart. The sag in in the rope when she is at the mid point is 10 degrees. If her mass is 50 kgs, what is the tension in the rope at this point?

Hi, i have a solution to the following problem but I'm not sure if it's right or not. If you shake one end of a taut rope steadily three times each second, what would be the period of the sinusoidal wave set up in the rope? Me, I thought that since I'm shaking the rope three times a second...

A stone with mass 2,0kg is tied to a rope with radius 1 meter to the circle center, and has the velocity 4 m/s. a) What's the tension on the rope on the top point of the circle? b) What's the tension on the rope on the bottom point of the circle? Here's my attempt to solve these...

A 212-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 29.1° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.757, and the log has an acceleration of 0.720 m/s2. Find the...

Hey, I need some suggestions to approach the problem: A lifeguard standing on a tower throws a buoy to a swinner 5m from the tower. The lifeguard, positioned 3 m above the water, pulls in the rope at a speed of 1m/s. How fast is the swinner coming to the shore when he is at 4m from the...

A rope is wrapped around a wooden sylinder with I=2.9 and radius = 0.25m A 50 kg crate is suspended to the free end of the rope and is pulled upwards with an acceleration of 0.80 m/s*s A crank handle is attached to the axle of the wooden cylinder and when turned rotates about the axle in a...

Indiana Jones! My physics class had this problem for our homework set this week and nobody has figured it out. We asked for help from our TAs today and they didn't know how to help us either. If someone could look at this problem and tell me what they think I would really appreciate it...

I need to figure this question out. I have to find the tension on the rope (1.14m) after swinging an airplane (.115kg) in the air for 1.49s. Any help? I did it like this. I found the velocity (v=d/t) using .82m as the distance (radius) (or should I have used 1.14m instead?). The velocity...

A guy wishes to swing across a hole, using a vine rope. In order to reach the other side he must swing so that the rope makes a maximum angle of 40 degres to the vertical. Regarding the guy as an 85 kg point mass, what is the minimum breaking tension of the rope if the rope is not to break?

A 55.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 8.40 s. The elastic rope obeys Hooke's Law. By how much is the rope extended beyond its unloaded length when the performer hangs at rest? I drew a free body diagram and summed up the...

I seem to be having trouble conceptualizing this question that I was asked to solve. In the problem, I have a rope of length L held so that the bottom of the rope barely touches the surface below it. At this point, the rope is released and falls to the surface. The question involves the...

A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at a contstant speed by a rope. The rope is inclined at 20.00degrees about the horizontal, and the sledge moves a distance of 20.0m on a horizontal surface. the coefficient of kinetic friction between the sledge and surface...

A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30 degrees with respect to the horizontal. The total weight of the sled is 470 N. The tension in the rope is 250 N. How much work is done by the rope on the sled in a time...

I wonder how could I calculate impact force of an object (eg. a stone) in a free fall impacting on the perfectly inelastic (perfectly hard) floor. I know: - m -mass of the falling object - h -height of the fall - v -speed at the time of impact - t -time it...

ASsume teh z axis is the vertical axis A homogenous rope of mass M and length L hangs vertically from a point of hte ceiling. Find the magnitude of the force F(z) by which the top part of the rope acts on teh lower segment of the rop at the distance z from the free end of the rope. Not...

The monkey climbs the rope trying to get the banana seen http://home.earthlink.net/~urban-xrisis/clip002.jpg I need to find the net torque and the total angular momentum about the pully axis. I am absolutly stumped but I'll give it a shot. So the monkey is moving upwards that means it has...

Im revising for an exam and I am practising past paper questions. I came across this question I am stuck. Please help. A sledge of mass 78kg is pulled up a slope by a rope. The slope is rough and is inclined at an angle of 22.6 degrees to the horizontal. The coefficent of friction between the...

A box of mass M = 5.7 kg is suspended by a rope over a pulley (Figure 5.64). Find the tension in the rope supporting the box and in the rope supporting the pulley. The tension in the rope supporting the box should just be mg? right? But the two labeled angles are not the same. Combined...