The angular velocity of a rotating body increases uniformly from 100 rad ⁄ sec to 200 rad ⁄ sec in 20sec. A. What is the angular acceleration B. How many revolutions will the body execute during this time? *
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Answer:
In this case, the initial angular velocity of the fan is ω
0
=0 and the final angular velocity of the fan is ω=100rev/sec.
The total number of revolutions before the fan coming to stop is calculated as follows.
θ=(
2
ω+ω
0
)t=(
2
100+0
)×(5×60)=15,000rev
Hence, the total number of revolution made before it stops is 15,000rev.
Explanation:
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