Question

Where is the ICR ?

I found two velocities

IC = 4/6 = 2/3 ft

(1-2/3) * 6 = 2 ft/s
(1+2/3) * 6 = 10 ft/s

which is A and which is B

Yes it's slipping.

Answer 1

Solve

Answer 2

This is Galilean Relativity

Freeze the conveyor, the disc is then moving to the left at 16 in that ref frame. And still rotating at 6.

then compare 16 and 6* 1

Answer 3

You wanna solve it using Galilean transformation ?

Answer 4

At IC, the instantaneous velocity =6* (2/3)-4=0, hence IC.
For A, V=6*1-4=2
For B, V=-6*1-4=-10

Answer 5

Why IC under B not above b ?

Answer 6

Correction on labeling.