Compact Disc. A compact disc (CD) stores music in a coded pattern of tiny pits 10 −7 m deep. The pits are arranged in a track that spirals outward toward the rim of the disc; the inner and outer radii of this spiral are 25.0 mm and 58.0 mm, respectively. As the disc spins inside a CD player, the track is scanned at a constant linear speed of 1.25 m/s. (a) What is the angular speed of the CD when the innermost part of the track is scanned? The outermost part of the track? (b) The maximum playing time of a CD is 74.0 min. What would be the length of the track on such a maximum-duration CD if it were stretched out in a straight line? (c) What is the average angular acceleration of a maximum-duration CD during its 74.0-min playing time? Take the direction of rotation of the disc to be positive.
Compact Disc. A compact disc (CD) stores music in a coded pattern of tiny pits 10 −7 m deep. The pits are arranged in a track that spirals outward toward the rim of the disc; the inner and outer radii of this spiral are 25.0 mm and 58.0 mm, respectively. As the disc spins inside a CD player, the track is scanned at a constant linear speed of 1.25 m/s. (a) What is the angular speed of the CD when the innermost part of the track is scanned? The outermost part of the track? (b) The maximum playing time of a CD is 74.0 min. What would be the length of the track on such a maximum-duration CD if it were stretched out in a straight line? (c) What is the average angular acceleration of a maximum-duration CD during its 74.0-min playing time? Take the direction of rotation of the disc to be positive.
Compact Disc. A compact disc (CD) stores music in a coded pattern of tiny pits 10−7 m deep. The pits are arranged in a track that spirals outward toward the rim of the disc; the inner and outer radii of this spiral are 25.0 mm and 58.0 mm, respectively. As the disc spins inside a CD player, the track is scanned at a constant linear speed of 1.25 m/s. (a) What is the angular speed of the CD when the innermost part of the track is scanned? The outermost part of the track? (b) The maximum playing time of a CD is 74.0 min. What would be the length of the track on such a maximum-duration CD if it were stretched out in a straight line? (c) What is the average angular acceleration of a maximum-duration CD during its 74.0-min playing time? Take the direction of rotation of the disc to be positive.
Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .
Determine the coordinate of a 3D point P(100.0, -60.0, 80.0) after rotating 60 degree
across Y-axis/X-axis/Z-axis, given that the center of rotation is (0.0, 0.0, 0.0).
Find the angular speed a CD must have to give a linear speed of 1.25 m>s when the laserbeam shines on the disk (a) 2.50 cm and (b) 6.00 cm from its center.
2. If a locomotive wheel with a diameter of 15 meters rolls 13, how many radian measure does it turn?
Answer; 1.17 rad or 26/15 rad
3. A central angle in a propeller pf helicopter measure 11 radians. If the distance staring from the center to the tip of the blade is 220 cm. Calculate its intercept arc.
Answer: 2420
4. The arm of a Ferris wheel starting from the center to its passenger seat has length of 80 ft. How far does a passenger's seat travel if the ferris wheel made a half rotation?
Answer: 80 rad
5. A car is travelling around a circular road whose diameter is 20 meter. If the distance traveled by the car is 10 meter . What is the measure of the corresponding central angle?
Answer: 0.5
I need solution...ty
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.