Orbit motion in a sander is created by a?
474284
eccentric gear and pin
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In order to get better responses, you will need to more specific and explain what you mean by that "question".\n\nThe first thing that came to my mind was centripetal force which maintains circular motion.  Without centripetal force, the object would not be in circular motion (thus linear motion).
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It doesn't actually come in contact with anything to cause friction.  When a "machine" makes sound, it is made from the moving parts as they hit or rub against one another.  Since a moving pendulum is relying on gravity and its own weight for the arc movements, it doesn't have anything to rub against.
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Simple harmonic motion can be described by a sinusoidal function\n\nX(t) = X0*sin(w*t)\n\nwhere X0 is the amplitude of the motion, w is the angular frequency, and t is time. Given this expression for the time dependence of the displacement, the velocity is expressed as\n\nV(t) = X0*w*cos(w*t)\n\nand the acceleration can be written as\n\nA(t) = -X0*w^2*sin(w*t).\n\nBased on these expressions, the maximum velocity is\n\nVm = X0*w\n\nand the maximum acceleration is\n\nAm = X0*w^2\n\nThe angular frequency w is\n\nw = 2*pi*f\n\nwhere the linear frequency for this problem is f = 4940 /min. Be sure to convert to the proper units to get the answers in the form you need.
1053820
Stationary in reference to what fixed point?
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http://images.google.com\n\nSearch for whatever types of motion you are interested in.
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Thrusters would do the job, or the center can counter rotate. Thrusters could rotate the whole assembly or a motor, attached to a  massive central hub could cause the thing to spin while the angular momentum of the hub is going the other way.\n\nOnce you get the thing rotating, you don't really need to keep it going except for the occasional thrust once in a very very long time. Why? because I assume people inside will be moving around, that will alter the angular momentum, but very very little.
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a DC motor loaded with a semi-circle iron piece in its shaft
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it was about objects in motion
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Gravity, friction and centrifigul.  Don't forget various applications of force = leverage, pulleys.
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You have to have the right tools first of all. You remove the dust cap first. Then take a socket and loosen the bolt or nut holding the crank arm on. Now using a special tool ,called a crank puller, parks makes a good one, thread the tool into the same threads that held the dust caps in place. Thread the tool in as far as you can. Now tighten the push rod, it is threaded through the center of the crank arm puller. As you tighten the crank arm will be pulled off the bottom bracket spindle
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Inside a copier there is a special drum. The drum acts a lot like a balloon -- you can charge it with a form of static electricity. \n\nInside the copier there is also a very fine black powder known as toner. The drum, charged with static electricity, can attract the toner particles. \nThere are three things about the drum and the toner that let a copier perform its magic: \nThe drum can be selectively charged, so that only parts of it attract toner. In a copier, you make an "image" -- in static electricity -- on the surface of the drum. Where the original sheet of paper is black, you create static electricity on the drum. Where it is white you do not. What you want is for the white areas of the original sheet of paper to NOT attract toner. The way this selectivity is accomplished in a copier is with light -- this is why it's called a photocopier! \n\nSomehow the toner has to get onto the drum and then onto a sheet of paper. The drum selectively attracts toner. Then the sheet of paper gets charged with static electricity and it pulls the toner off the drum. \n\nThe toner is heat sensitive, so the loose toner particles are attached (fused) to the paper with heat as soon as they come off the drum. \nThe drum, or belt, is made out of photoconductive material. Here are the actual steps involved in making a photocopy: \nThe surface of the drum is charged. \n\nAn intense beam of light moves across the paper that you have placed on the copier's glass surface. Light is reflected from white areas of the paper and strikes the drum below. \n\nWherever a photon of light hits, electrons are emitted from the photoconductive atoms in the drum and neutralize the positive charges above. Dark areas on the original (such as pictures or text) do not reflect light onto the drum, leaving regions of positive charges on the drum's surface. \n\nNegatively charged, dry, black pigment called toner is then spread over the surface of the drum, and the pigment particles adhere to the positive charges that remain. \n\nA positively charged sheet of paper then passes over the surface of the drum, attracting the beads of toner away from it. \n\nThe paper is then heated and pressed to fuse the image formed by the toner to the paper's surface.
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(a) ω = ωo + αt\n0 = 150 + α * 132\nα = -150/132\n≈ -1.136 rev/s²\n\n(b) θ = ωot + ½αt²\n= 150 *132 - ½*1.136*132²\n≈ 9903 revolutions (nearest rev)\n\n(c) See (b)\n\n(d) 75 rpm = 75*2π rad/min\nα = rω²\n= 50 *(75*2π)²\n≈ 11103300 cm/min²\n= 111033 m/min²\n= 111033/3600 m/s²\n≈ 30.84 m/s²\n\n(e) ???? I do not understand what it is you are seeking.
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A wooden dowel is placed on a lathe where it is rotated and ground down to form.  Then it is sanded, finished and polished.
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Motion is produced by any force, that could be wind, or  a person applying force to an object, or any other kind or force. motion is stopped when the force that is applied to it stops.
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Since no-one else has answered the question yet, I'll take a stab at it -\n\nI think the term you're looking for is Hysteresis
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On a failr recent space mission an austronaut was goofing around and was swirling different things around in plastic bags - salt, sugar, liquids, ect...\nScientists who observed these experiements noticed that despite a lack of gravity, friction between the granular items caused a static reaction that pulled the grains together.  Some scientists feel that this is why planets are formed.