Swing Definition and 184 Threads

The maximum speed of a child on a swing is 4.9 m/s. The child’s height above the ground at the lowest point is 0.7 m. How high above the ground is he at his highest point? http://img208.imageshack.us/img208/9949/untitledyx0.png Above is the work done to solve the problem. I don't understand...

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) =...

Hi, A child on a swing swings with a time period of 2.5s and an amplitude of 2m. What is the max. kinetic energy of the oscillation? I'm not sure how to work this out without her mass. Her max speed is 2.51m/s but I don't know how to do this. BTW this is all the information that is given Any...

http://www.physics.auburn.edu/~boivin/homework9.htm "A bullet of mass m and speed v passes completely through a pendulum bob of mass M. The bullet emerges with a speed of v/2. The pendulum bob is suspended by a stiff rod of length l and negligable mass. A) What is the minimum value of v...

Conservation of Energy - "Swing Problem" Hi everyone I'm having some trouble solving this problem because I'm not sure what method to use. It seems like it could involve Centripetal acceleration, conservation of energy, and/or conservation of momentum. Problem A swing seat of mass M is...

Tarzan (mass m) is trying to swing across a river on a long vine (length L) Assume that he starts from rest. Determine the tension in the rope at the bottom of the arc as a function of the angle theta, the arc angle between his starting point and ending point and whatever other variables...

Hi, I have a question regarding forces and motion that I'm not sure on how to solve. I was wondering if anyone here could please show me. Thank you. Question: Tarzan weighs 820N and swings from a cliff at the end of a 20.0m vine that hangs from a high tree limb and initially makes an angle...

A 395 N child is in a swing that is attached to ropes 1.8 m long. Find the gravitational potential energy of the child+Earth system relative to the child's lowest position when the ropes make a 30° angle with the vertical. What I did with this problem is I drew a diagram and then figured that...

Hey. I did some calculations, and estimated that an average person hitting a ball with a baseball bat would apply approximately 600-800N to the ball. Does this sound approximately right, or am i way off?

Problem: A large stick is pivoted about one end and allowed to swing back and forth as a physical penulum. The mass of the stick is 5.90 kg and its center of gravity (found by finding its balance point) is 1.2 m from the pivot. If the period of the swinging stick is 3.90 seconds, what is its...

Hey. For my physics class, we are required to do whatever it takes to calculate the force one can apply with the swing of a baseball bat. We are given a ticker timer, a stopwatch and a meter ruler (to simulate a baseball bat). We can use other things if we wish, such as an actual baseball bat...

I need help in determining the forces acting on the supports for a swingset. Do the uprights only act in tension and compression or is there also some bending forces as a person swings as high as they can? Are there any formulas that I can use to determine the forces involved during a swinging...

Can anyone help me with this? Assume that you are driving down a staight road at a constant speed. A small ball is tied on the end of a string hanging from the rear view mirror. Which way will the ball swing when you apply the breaks? a. forward b. backward c. it will not swing d...

Can anyone explain how centripetal force is involved in a golf swing, i understand that it is one force keeping the club from flying out of your hands, but what else. THis is not a homework question i am just curious. (Had to specify because of the thread above)

Swing Problem -- Im looking at a swing problem with a swing at some angle theta from vertical. The swing is massless and a child with weight W sits at the end of the swing. How do i find the tension of the swing? Likewise, when the swing is vertical? Thanks!:smile:

This is the question I have from my book, I have tried numerous methods of solving it, but I cannot obtain the correct answers. If someone could get me started with an equation I could go from there... Jane, whose mass is 50kg, needs to swing across a river (having width D) filled with man...

Here is a homework problem that I believe is solved right. A child oscillates freely on a playground swing. It takes 2.5 seconds for the child to complete one full swing and return to the person that is pushing her. How long is the swing? This is how I solved for the answer. l =...

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...

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?

you are stopped sat in a swing and move your feet forward, the swing will acelerate backwards you are rocking in the swing (forward) you move your feet forward and the swing acelerate forwards how is that? before you say you rise and lower your center of gravity adequately let me point...

A 5 kg ball hangs from a 10 m strong. The ball is swung horizontally outward 90 degrees from its equilibrium position. Assuming the system behaves as a simple pendulum, find the maximum speed of the ball during its swing. what would I have to do to figure this problem out? \omega =...

Just a quick question which i don't seem to get the right answer for. "A parent holds a small child in a swing so that the angle of the swing support is at 20 degrees to the vertical.The child's weight is 200N and the swing seat weighs 50N.What horizontal force must the parent apply" I...

i kinda also need help on another problem. i can't even start this problem because i have no idea how! can someone please tell me how? Tarzan and Jane, whose total mass is 130kg, start their swing on a 5m long vine when the vine is at an angle of 30 degrees with the horizontal. At the bottom...

Gore won Hawaii by 19%, Clinton won it by 20%. Hawaii is suppose to be 'a lock' for the Democrats. So, what's going on in Hawaii? It's tied. First, it appears that Hawaii hasn't been polled in a while -- at least until these last two polls indicating a dead heat between Bush abnd Kerry for...

Jack, who weighs 653 N, swings from a cliff at the end of a convenient vine that is 26 m long. From the top of the cliff to the bottom of the swing, he descends by 3.2 m. The vine will break if the force on it exceeds 950 N. (a) Does the vine break? yes / no (b) What is the greatest force...

means what? how to know it is Swing ? :rolleyes:

Every kid has asked the question on a swing, could I go all the way around? How fast would I have to go? I wanted to find the answer.I’ve taken the first year of calculus, and I have been having trouble with the math of this problem :confused: . I am not sure there is an algebraic solution to...

After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 47.0 cm. She finds that the pendulum makes 97.0 complete swings in a time of 141 s . What is the value of g on this planet? a complete swing is a cycle? so the period would be 97/ 141 = 0.688??is...

How fast is the pumpkin moving at the bottom if theta = 30 degrees, L = 5 m, g = 9.8 m/s^2, m = 10 kg. L is the length of the string holding the pumpkin. M is the mass of the pumpkin. It's like a pendulum, the pumpkin is positioned at 30 degrees from the vertical and let go. Assume no air...

I hope this comes under the classic physics roof. Do any of you play the game and would like to offer your opinions on the physics of the club swinging into and propelling the ball toward the target? If any would like to take on a problem of shaft flex I would enjoy hearing about your views...

hello all this is my first post. I need to know the time to do one complete revolution around the pole. ...m I------------------ I...I...θ...\ I...I.....\ I...I......\..n I.......[] I I m = 3 meters n = 5 meters θ = 30 [] = swing

A frictionless system consists of a swing of given length and its massive rider, initially at rest. Is it possible for the rider to kick this system into its unforced natural frequency?

Hello all, another question. Can anyone explain to me please the details of, for example, a person swining a sword? How much body mass is involved, from which point do I measure the arc of the swing, how much energy is involved, et cetera? Thanks.

Here is a question I had to figure out in my grade 11 physics class. "If a 40 kg child is running at a rope suspended from the branch of a tree at 8.0 m/s, and then jumps and grabs it, how high will he swing off the ground?" (I had to translate it so pardon me if it is hard to...