Angular speed A DVD is approximately 12 centimeters in diame

Angular speed A DVD is approximately 12 centimeters in diameter. The drive motor of the DVD player is controlled to rotate precisely between 200 and 500 revolutions per minute, depending on which track is being read. Find an interval for the angular speed of a disc as it rotates. Find the linear speed of a point on the outermost track as the disc rotates. determine whether the statement is true or false. Justify your answer. A degree is a larger unit of measure than a radian. An angle that measures - 1260 degree lies in Quadrant III. Writing In your own words, explain the meanings of (a) an angle in standard position, (b) a negative angle, (c) coterminal angles, and (d) an obtuse angle.

Solution

92) rate of car = 65 miles / hour

diameter of wheel = 2.5 feet

in one rotation car travelled = 2.5*3.14 = 7.85 feet

car is travelling 65 miles in one hour

therefore, 65 miles / hour = 65*5280/60 = 5720 feet/ min

therefore, number of revolutions = 5720 / 7.85 = 729 revolutions per minute

b) angular speed = 729*2*pi = 4576 radians / minute