A disk 7.98 cm in radius rotates at a constant rate of 1 250 rev/min about its central axis. (a) Determine its angular speed. ra
d/s (b) Determine the tangential speed at a point 3.10 cm from its center. m/s (c) Determine the radial acceleration of a point on the rim. magnitude km/s2 direction (d) Determine the total distance a point on the rim moves in 1.90 s. m