15rev/12sec = 5/4 rev/sec = 5π/2 rad/s
That's the speed of the smaller pulley
Assuming they are both attached to the same belt, the larger pulley's rotational speed is 6/20 the speed of the smaller one.
Two pulleys have radii 20cm and 6cm,respectively. The smaller pulley rotates 15 times in 12 seconds. Find the angular speed of each pulley in rad/sec
2 answers
Smaller Pulley:
V=15rev/12s * 6.28rad/rev = 7.85 rad/s
Larger Pulley:
V = (6cm/20cm) * 7.85 = 2.36 rad/s.
V=15rev/12s * 6.28rad/rev = 7.85 rad/s
Larger Pulley:
V = (6cm/20cm) * 7.85 = 2.36 rad/s.