A piece of wood is pressed against a spindle sanding disk which is a uniform disk with a radius of 0.090 m, rotating at an initial angular velocity of 37.0 rad/s (ωi = 37.0 rad/s). This motion results in a constant tangential frictional force of magnitude f = 9.00 N and causes the sanding disk to come to a complete stop in = 25.0 s. (a) Small pieces of wood get removed from the large piece of wood with a speed equal in magnitude to the tangential velocity of the rim of the sanding disk (and in a direction tangent to the disk). What is the speed of the pieces of wood when the disk is rotating at its initial angular velocity of ωi. (b) What is the angular acceleration α of the sanding disk. (c) How many revolutions does the disk complete before coming to a stop?
A piece of wood is pressed against a spindle sanding disk which is a uniform disk with a radius of 0.090 m, rotating at an initial
(a) Small pieces of wood get removed from the large piece of wood with a speed equal in magnitude to the tangential velocity of the rim of the sanding disk (and in a direction tangent to the disk). What is the
speed of the pieces of wood when the disk is rotating at its initial angular velocity of ωi.
(b) What is the
(c) How many revolutions does the disk complete before coming to a stop?
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