A laser pointer is placed on a platform that rotates at a rate of 20 revolutions per
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A laser pointer is placed on a platform that rotates at a rate of 20 revolutions per minute. The beam hits a wall 8 m away, producing a dot of light that moves horizontally along the wall. Let θ be the angle between the beam and the line through the searchlight perpendicular to the wall (Figure 11). How fast is this dot moving when θ = π/6?
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1 10 1 8 m Laser Wall
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