This question describes a simplified model of a device used to de-spin a satellite.
This question describes a simplified model of a device used to de-spin a satellite.
This question describes a simplified model of a device used to de-spin a satellite. A uniform circular disc of mass 12m and radius a lies on a smooth horizontal table and is free to rotate about a fixed vertical axis through its centre. A light wire is attached to a point on the rim of the disc and is wound round this rim. A particle of mass m is attached to the free end of the wire and is initially attached to the rim. When the disc is rotating with angular speed in the opposite sense to that in which the wire is wound the particle is released so that the wire unwinds and remains taut. The length of the wire is chosen so that it is completely unwound at the instant that the disc stops rotating. The particle is then moving at right angles to the wire. Use the principles of conservation of angular momentum and energy to find the length of the wire.
A basic model of a gadget used to de-spin a satellite is described in this question.
A basic model of a gadget used to de-spin a satellite is described in this question.
A basic model of a gadget used to de-spin a satellite is described in this question. On a smooth horizontal table, a uniform circular disc of mass 12m and radius an is free to revolve around a fixed vertical axis through its center. A light wire is looped around the rim of the disc and fastened to a spot on the rim. The free end of the wire is originally attached to the rim, and a particle of mass m is attached to it. When the disc is rotating with angular speed in the opposite sense to
