when you drop a ring or circular object on the ground, what do you call the rotation until the ring is flat?
109753
A mobius strip? or maybe Rotational Stability? It's an analysis of "wobbling", exhibited by common objects (coins, bottles, plates, etc) when they are spun on horizontal, flat surfaces. The object maintains a "wobbling" motion of a cylinder, which can be observed in slow motion by means of stroboscopic illumination.
905757
This is uniform motion, if it is going in a straight line at constant speed.\n\nIf there are no forces acting upon a body, and therefore no acceleration (remember F=ma) or change in direction, nor any change in angular momentum, the motion is uniform. If it were changing direction, accelerating or going round in circles then it is non uniform.
927274
Yes - roll a ball down a hill. It has linear inertia (the balls center of mass moving down the hill) and rotational inertia (the ball is spinning while it moves down the hill).
262624
Angular velocity is the distance a rotating object, like a wheel, accellerates over a certain period of time.  You must switch rotational speed into rad/s, however, in order for it to work.
941552
Call the mass M, moment of inertia I, velocity v, angular velocity w, drop height h, gravity g, and axle radius r.\n\nYou do this by conservation of energy.  call the energy zero when the yo yo first starts out.\n\nThe potential energy then is: PE = -Mgh\nThe translational kinetic energy is: KE = (M * v^2)/2\nThe rotational kinetic energy is: RE = (I * w^2)/2\n\nBy conservation of energy, the total energy (sum of these three) never changes but stays at the initial value of zero.\n\nThe conservation of energy equation is:\n\n0 = PE + KE + RE\n\nYou need one more relation, the connection between the velocity and the angular velocity.  These are related because the yoyo rolls down the string so:\n\n w = v/r\n\nYou still need to do the acceleration and time portions.  You cna take the derivative of the energy equation to get the time behavior.   After taking the derivative, remember that dh/dt  = v.
789141
The proper name is the cylinder.  In shooting circles it may also be called a "wheel" ... for example, "He's a good shot with that wheel gun."
755334
Analyze the forces at the top of the loop:\n\nThe force of gravity pulling the ball downward,\nthe upward centrifigal force keeping the ball on the track,\nand the force of the track pushing the ball downward.\n\nThe answer to the question is when the centrifigal force is exactly equal to the weight, so the force of the track equals zero.\nmg=mw^2R\nw is the angular velocity\nw=sqrt(g/R)\n\nOnce you know the angular velocity, compute the equivalent linear velocity by mutlipying by R\n\nthen use mgh=1/2mv^2\nto compute h\n\nWhere is point Q?\n\nj
299681
The solid sphere will reach down first because it has a smaller rotational inertia. For the solid sphere, rotational inertia I = (2/5)*MR^2 for horrow I = (2/3)*MR^2. Where M is mass and R is radius.\n\nThe kinetic energy is K = (1/2)*I*w^2, where w is the angular velocity, I is the inertia. K is the same for both sphere since they have the same mass and position on the plane and this gives the same potential energy. When the spheres roll, this potential energy is transfered to kinetic energy k.\nFrom the equation of K, a larger "I" gives a smaller "W", and 'W' is higher for smaller "I" as K is same. so the solid sphere must reach down first as it has a smaller rotational inertia and this cause the sphere to roll faster than the other as "w" is higher.
202904
A regular pendulum moves back and forth while hanging from a point. A torsional pendulum twists clockwise and counterclockwise while hanging from a point. In each case, the heavier the lower end of the pendulum, the longer it will swing or rotate. A torsional pendulum also works better with a rubber or other "live" length of material. Using a rope will not give you much rotation after it unwinds this first time.
642218
This actually refers to the discus-like way of throwing the putt. You start at the bottom end facing the rear. Wind up with a couple of spins and throw forward at the top end. The spin will help keeps you in the circle.
212614
the wall stops it and the ground starts it again. if the spinning force is greater than the stopping force it would continue to spin after hitting the wall.
25693
Down. Clockwise or anti-clockwise rotation is very much dependent on the first impulse when you open the drain, with coriolis force a distant second.
202491
It is Nardo Ring. It is used to test cars. It is a circle banked at such an angle that the driver does not need to turn.
1126388
Surface tension and elasticity of the water are just about the same thing, for all practical purposes. The water can not get out of the way fast enough to let the stone sink before the motion and deflection cause the stone to bounce. The gyroscope motion of the stone is what gives it enough balance to not lose much of it's momentum when it hits something, like water. That's why flat, smooth stone work best.
681130
They will tend to rotate in a circular path. Small tyre in the inner circle and bigger tyre in the outer circle.\n\nThat is the natural motion. But if one makes it move in a straight line, it will make the bigger tyre to skid as well as rotate;the excess path is being nullified by the skidding.
630926
The rotating ball will cause air to pass over its dimples depending on the direction it rotates it will cause aerodynamics to change and it will slow down one side of the ball and cause it to "slice" or "hook". Also the left and right and up and down angle of the club affects the way a ball handles in mid air.
208881
Any object in circular motin is acted on by a centripetal force.\n\nA cycle or a car or a train moving in a circular path. The frictional force provides the necessary centripetal corce.\n\nA stone tied to the end of a string and made to move in a circular path. The tension in the string provides the centripetal force.\n\nMoon rotates about the Earth. The gravitational force provides the necessary centripetal corce.