Question

a fan rotates 12 times a second find the angular acceleration​

Answer 1

Answer:

ANSWER

We Know,

ωf=ωi+αt

θf=θi+21αt2

(a). ωf=0+π×4=4π rad/s

(b).θf−θi=21π×16=8π rad

(c). After 4 sec angular displacement =8π

      No. of turns=2πangular displacement

      No. of turns=2π8π=4 turns

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