A UNIFORM DISC 6.00CM IN RADIUS ROTATES AT A CONSTANT RATE OF 1200REV/MIN ABOUT ITS CENTRAL AXIS.DETERMINE ITS ANGULAR SPEED AND THE TOTAL DISTANCE A POINT THE RIM MOVE IN 3.00S.

Answer 1

1200rev/min * 2π/rev * 1min/60s = 40πHz

40πHz * 3s = 120π*6cm = 720πcm

Answer 2

Va = 1200rev/60s * 6.28rad/rev = 125.6 rad/s = Angular velocity.

Circumference = pi*2r = 3.14 * 0.12m = 0.377 m.

d = 1200rev/60s * 3s * 0.377m/rev = 22.6 m.