Starting at ( ? A )0 = 4 rad/s , when ? = 0, s = 0, pulley A is given an angular acceleration a = (0.6 ? ) rad/s2, where ? is in radians. The pulley has an inner hub D which is fixed to C and turns...

Starting at (?
A)0 = 4 rad/s , when
?
= 0,
s
= 0, pulley
A
is given an angular acceleration
a
= (0.6
?) rad/s2, where
?
is in radians. The pulley has an inner hub
D
which is fixed to
C
and turns with it. (Figure 1)

Part A

Determine the speed of block
B
when it has risen
s
= 0.6 m .