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An electric fan acquires frequency of 30...

An electric fan acquires frequency of 300 rpm after completing 5 revolutions when it is switched on. Determine the angular acceleration of the fan and the time taken to acquire the frequency of 300 rpm.

Text Solution

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The correct Answer is:
`5 pi" rad "cdot s^(-2),` 2s
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A wheel completes 400 revolutions in 1 minute. Its speed is increased to 600 rpm in 4 s. Determine the angular acceleration .

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Knowledge Check

  • The motor of an engine is rotating about its axis with an angular velocity of 100 rpm. It comes to rest in 15 s, after being switched off. Assuming constant angular deceleration, what are the numbers of revolutions made by it before coming to rest ?

    A
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    B
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    C
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    D
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  • After switching on a ceiling fan it completes 10 revolutions in 3 s. The number of complete revolutions it will perform in the next 3 s (assuming uniform angular acceleration ) is

    A
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    B
    20
    C
    30
    D
    40

    • Similar Questions

    Explore conceptually related problems

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