What is Body: Definition and 1000 Discussions

Body art is art made on, with, or consisting of, the human body. The most common forms of body art are tattoos and body piercings. Other types include scarification, branding, subdermal implants, scalpelling, shaping (for example tight-lacing of corsets), full body tattoo and body painting.
Body art is also a sub-category of performance art, in which artists use or abuse their own body to make their particular statements.
More extreme body art can involve mutilation or pushing the body to its physical limits.
In more recent times, the body has become a subject of much broader discussion and treatment than can be reduced to body art in its common understanding. Important strategies that question the human body are: implants, body in symbiosis with the new technologies, virtual bodies, among others.

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  1. P

    Help With Drawing a Free Body Diagram

    Homework Statement A large box containing your new computer sits on the bed of your pickup truck. You are stopped at a red light. The light turns green and you stomp on the gas and the truck accelerates. To your horror, the box starts to slide toward the back of the truck. (Assume that the...
  2. M

    Confused about Free Falling Bodies in Vacuum: Acceleration or Velocity?

    Here is an unsettling question from a practice set that I've been working on today. Unsettling because the answer key contradicts my answer so I need a second thought. A pingpong ball and a golf ball are dropped in a vacuum chamber from the same height and at the same time. When they have...
  3. A

    Mass of a weight attached to a body

    Homework Statement A weight is attached to a wooden body with mass M=4kg lying on a horizontal surface. The coefficient of friction is μ=0.2. What is the mass m of the weight so that the wooden body is moving? Image: Homework Equations Equations of forces The Attempt at a Solution I tried...
  4. G

    Medical Living with Unbalanced Body for 10+ Years: Seeking Solutions

    I have a unbalanced body and have done for 10 plus years maybe longer. i think a combination of things has done it one i am from young age racket sports mad tennis and squash etc so my right hand side has always been stronger than my left. Also years ago when gym equipment when it was not...
  5. A

    Black Body Radiation: Get Help Understanding It

    i don't get it. why would a body with temperature give up photons? help please
  6. T

    What would happen if I was standing in the LHC

    What would happen if I was standing in the LHC and I was hit by a (one) proton traveling at 99.999991% the speed of light. Would the collision burn a hole in me? or would it simply be going so fast that it passes through me without interacting with the particles in my body?
  7. Lord Crc

    Rigid body, torque and moment of inertia

    Hi, it's been quite some years since I took some entry-level mechanics at uni, and my book is no longer with me, so I'm struggling a bit here. I'm making a very simple rigid body simulator just for fun, but the angular velocity is not working out right. I suspect I've forgotten something...
  8. anubodh

    Gravitational Waves: Lone Body in Universe

    An heavy body near other body gives off gravitational waves at a higher rate than when it is away from any body. So, if there is only one body in the universe and nothing else.Will it give off the gravitational waves and it's mass will keep decreasing?
  9. I_am_learning

    Finding a Precise Scale for Measuring Human Body Weight Fluctuations

    I was lately interested in learning how the human body weight changes through out the day. Like, how much weight (may be in just 10s of grams) is lost during sleeping, after bathing, after workout and like that. For that I would require a highly precise scale. But most commercially available...
  10. DivergentSpectrum

    Determining "boundedness" of particles in an n body simulation

    is there a numerical method to determine whether two bodies will stay bounded forever in an n body simulation? i know if the energy of a particle orbitting the origin is negative, then it is bounded, where -∫(force)dr+(dr/dt)2/2=energy. but I am curious about a genereral case, where there are...
  11. DivergentSpectrum

    Solving the N Body Problem with RK4: Verification & Convergence

    the force field trajectory calculator worked pretty good, so i decided to step it up and solve the famous n body problem. i used rk4 to solve it, and to verify my solution i calculate the work done on each particle and the kinetic energy of each particle at the beginning and end. it appears...
  12. A

    Gravitational deviation of matter travelling near c by a massive body

    Light traveling transverse to a massive body (e.g. Sun) is deviated by an angle twice the amount predicted by Newtonian gravitational theory. This is predicted by GR and proven experimentally. What would be the deviation of a matter particle traveling near c transverse to a massive body...
  13. M

    Gyroscope, non symmetrical body

    Hello, first of all I know this post for help is not the clearest. I am looking for quick help but not necessarily the answer. I know I can solve the math of the problem but I am having trouble analyzing and setting up what I have. So I am asking for help with the approach. Homework Statement...
  14. B

    Bending moments on a rotating body

    Homework Statement A body (let's call it a rod for simplicity) is in frictionless space, and is composed of 4 smaller sub-rods fused (cannot break) end to end. Each sub-rod has a unique mass (m1, m2, m3 and m4) and length (l1, l2, l3, and l4), but they all have the same diameter d. A force...
  15. fando1234

    Solving the N-Body Problem: Is it Possible?

    Hi all, I should start by saying I'm an amateur at mathematics so please excuse me if the question seems a bit daft. But I'm just reading a book about chaos and complexity theory (John Gribbin: Simply Complexity) and it brought up a problem that I've certainly heard of before; the 'three body...
  16. J

    Coriolis Force & Rotating Body Problem

    Homework Statement Coriolis Force - Explain how the following situations would appear in both the inertial and non-inertial reference frames. Assume the inertial frame to be a view from above. Situation 1 - a ball is thrown from the centre of a merry-go-round which is rotating...
  17. M

    MHB What kind of motion will the body do?

    Hey! :o The potential energy of a body with mass $ m=3 $ is given by the function $ U(x)=\frac{2}{5}x^5$. Initially the body is at the position $x=0$ and has velocity with metre $1$. How can I find what kind of motion the body will do?? I have done the following: $$F=ma=3v'=3x''$$...
  18. C

    Waves that can pass through the body

    I was just wondering, are there any waves that can pass through the human body in a straight line, without being distorted or refracted in anyway?
  19. L

    MHB Free Body Diagram Solve Problem: Find Force Normal

    SOLVE THIS PROBLEM And this is the figure I need the free body diagram because the book solve this problem in this way the force normsl is n = fcosx the verticall componente is fsenx = w + miuN why does the fr is vertical in this case?
  20. M

    Does human body capacitance change when floating vs. standing?

    Hello guys, I read some articles recently about how touchscreens work by using the capacitance in human bodies. I'v seen the human body capacitance is quoted at around 100pf, is it the same when the human body is floating in mid-air, as if it is standing on the ground? My goal is to detect...
  21. Chacabucogod

    Rotation of body in stregth of materials problem

    Homework Statement A uniform bar of length 2l is rotated in a horizontal plane about its mid-point as center with an angular velocity ω. This case must be reduced to a problem in statics by the application of d'Alembert's principle, the "forces" acting being "centrifugal" forces. a) Plot...
  22. F

    Local Variables in Construct versus in Method Body

    I've posted a method below. I'm experimenting with local variable declarations in java. Actually, a compiler error in eclipse has made me reconsider what I understand about local variables. Why can't the local variable, String final, be created inside my if statement? Why, instead, would...
  23. aditya ver.2.0

    Why doesn't our body experience equal pressure when we press our finger?

    According to Pascal Law, when there is an increase in pressure at any point in a confined fluid, there is an equal increase at every other point in the container. Then why doesn't our entire body experiences the same pressure throughout the body when we press our finger. Isn't the entire body...
  24. Austine-J5

    Making the body of a RC helicopter from balsa wood

    Holla peeps,in the nearest future I hope to make a rc helicopter. I've done a series of researches and so far things are falling into place but I've just hit a hard rock. All model Rc I've seen are either made of aluminum, plastic or panel boards so am wondering what about balsa wood? Its light...
  25. S

    Angle of Repose: What is it & How Does It Relate to the Body?

    What is Angle of repose? All I know is something related to the body on an inclined plane slipping or at rest. Can someone explain?
  26. M

    How does our body acquire vitamin D from sunlight?

    Can anyone explain how we acquire vitamin D or which chemical reaction takes place ?
  27. R

    Can a plasma give off black body emission?

    This may seem like a strange question, I'm trying to differentiate between the spectra from a plasma and the spectra from a black body, is there a difference? I'm thinking the spectrum from a plasma would be that of bremstrahhlung as it is ions flying everywhere, so it would not be possible...
  28. Keith

    Question about space travel and the human body

    Hello I have a question that's been bothering me for a while now and I figured I'd post it here to see if anyone could put my mind at ease. (Sorry if I accidentally posted this in the wrong place) Given that people can only withstand a certain amount of force on their bodies (about 5 Gs)...
  29. gfd43tg

    Pain tolerance with mind vs body

    Hello I was thinking, in the world in general, there are many people who would actually prefer to do hard labor over mind stimulating work. Even in my own studying I often get pain in the head and frustration. It doesn't take (relatively) too much thinking to get me to get up and take a five...
  30. C

    Solving Summations: Tips & Tricks for Homework

    Homework Statement See the attachment, I am stuck as to how the summation sign \sum_{b\neq a}^{} in (2.1.1) ends up as \sum_{ab}^{} in the term with the red dot above (2.1.5). Homework Equations The Attempt at a Solution As I understand you end up taking the product of two summations such...
  31. D

    Calculating the 'Kicking Out' Force in Toppling Objects

    Hi. I am trying to calculate the 'kicking out' force created when an object topples over. Attached is a picture of what I mean. The body in the picture topples in a clockwise direction as shown, with its initial pivot point at 'a'. The centre of gravity of the body is shown as cg. Now I have...
  32. Greg Bernhardt

    What Are the Rules for Drawing a Free Body Diagram?

    Definition/Summary A free-body diagram is a diagram of all the contact and non-contact forces acting directly on a body (in a non-inertial frame, that includes "fictitious" forces). Indirect forces (such as the weight of a different body), and internal forces, should not be shown...
  33. N

    Radius of Mercury (celestial body)

    Homework Statement It is given that the period of Mercury is 87.9 days and the angular speed of Mercury is 8.27*10^-7 I am asked to find the radius of Mercury. I have no idea how to calculate the radius just the two pieces of information given. Should there also be the linear velocity of...
  34. T

    Differences in iron properties inside & outside the body

    What is difference between iron that we use in food...and iron metal
  35. marellasunny

    Using the prop shaft tunnel as ''backbone'' for body structure

    In regards to the Lotus Elan from 1962, my book H-point says that Colin Chapman used the prop shaft tunnel as ''backbone'' to the body structure. Can someone please elaborate on this? Does this mean that the structure of the prop shaft tunnel acted like a stiffener for the entire body...
  36. L

    Rotating hoop with body fixed inside of same mass

    Homework Statement A small body A is fixed to the inside of a thin rigid hoop of radius R and mass equal to that of the body A. The hoop rolls without slipping over a horizontal plane; at the moments when the body A gets into the lower position, the center of the hoop moves with velocity v0...
  37. dean barry

    Is the Barycentric Escape Velocity Independent of the Mass of the Escaping Object?

    After calculating the gravitational PE using : PE = ( G * m1 * m2 ) / d Then i split the result into KE between the two bodies according to the ratio of the masses, then calculated the individual velocities from those (based on KE = ½ * m * v ²) Any comments ?
  38. dean barry

    Two body final velocities (check this please)

    Homework Statement Two masses m1 & m2 in free space are released from rest at a distance D and draw together under gravity to a distance d, calculate the final velocity of each mass. Homework Equations Final total KE of both bodies at d from : KE (t) = ( ( G * m1 * m2 ) / d ) -...
  39. L

    Physics Fundamentals : Free Body Diagram

    Homework Statement A 5.0kg mass is suspended from the ceiling. A horizontal force F is applied to hold the string in position as shown http://i.imgur.com/ZdR72ff.jpg Determine the reading of F on the spring balance by using a scale diagram Homework Equations None The Attempt at...
  40. I

    Large Body Orbiting a Small One?

    When I was in school (over 20 years ago in a backwoods town), I leaned all kinds of wrong things about science. I think this might be one of those things. Back then we were taught that—hypothetically—if the Sun were to instantly, inexplicably, be reduced to the size of a basketball (while...
  41. marellasunny

    Relation between suspension switching frequency and body eigefrequency

    'Slow-active suspensions realize small switching frequencies to control low-frequency body movements,such as roll pitch and lifting motions.Fully-active suspensions reach switching frequencies,like semi-active suspensions,greater than the natural eigen-frequencies of the vehicle.'- an excerpt...
  42. A

    Black body radiation and particle nature of light.

    It is given in my book that the phenomenon of black body radiation can be used to prove the particle nature of light. They have also mentioned that the wavelength-intensity relationship "cannot be explained satisfactorily on the basis of wave theory of light." But why? Thanx in advance...
  43. dean barry

    Two - body collision energy and velocity

    Here is the problem : Two heavenly bodies (m1 and m2) (non orbiting) in free space at a distance D are released from rest and allowed to approach each other under gravitational influence to a final distance d. This is the way I've worked the problem : The total potential energy difference...
  44. G

    What is the normal acceleration of body in non uniform circular motion

    when the body rotates with uniform motion then the normal acceleration is V^2/r. but what is the normal acceleration when the motion is in non uniform circular motion let's say when body has uniform tangential acceleration.
  45. S

    Does born rigidity mean elongation of a body?

    Consider an unbreakable nail. A nail of length 10cm moving at 0.866c. If i stop the nail by hitting its cap, would the tip end countinues to travel?
  46. D

    Conservation of Momentum and Kinetic Energy in Collisions with Rigid Bodies

    I'm having trouble with this line from Goldstein-"the center of mass moves as if the total external force were acting on the entire mass of the system concentrated at the center of mass." If a bar is floating in space (at rest in the frame) and a point mass strikes the bar perpendicular to...
  47. I

    Can a body in space form a sphere?

    So this is some what of a silly question, I was bored and watching YouTube and there was a guy trying to say that the Earth is hollow ( crazy people are funny to watch) but it got me thinking could a planet form so that it was hollow? Or could a something like a small moon be hollowed out? I...
  48. A

    Resultant force when a body is accelerating

    Homework Statement There is a body of mass 500kg accelerating at 2.5ms^-2. It experiences a frictional force of 1000N. Homework Equations Resultant Force = ma The Attempt at a Solution Resultant Force = (500)(2.5)N = 1250N The body is moving forward with a net force of 1250N A...
  49. Delta2

    Dual role of force acting on rigid body

    Can the same force increase both the translational and rotational kinetic energy of a rigid body? If yes then the work done by the force equals the sum of the increase in the translational and rotational kinetic energy?
  50. davgonz90

    Can The Human Body Be Expressed Mathematically?

    I have a question: can the human body be expressed mathematically? If so, how would you even go about starting to map out the algorithmic structure of something that's living (which would include molecular function, cellular function, etc. etc.)?
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