Answer:
The velocity in the border of the roll is 0.025 m/s.
Step-by-step explanation:
We have a roll that has an angular velocity of
[tex]\omega = 140\, rpm[/tex]
The tangent velocity (of the edge of the roll) can be calculated as
[tex]V=\omega * r=\omega * D/2\\\\V=(1/2)*140\frac{1}{min}*2.4\, cm*\frac{1m}{100cm}*\frac{1min}{60s}\\\\V=0.028\,m/s[/tex]
The velocity in the border of the roll is 0.025 m/s.
