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AMU Medical AMU Solved Paper-1998

  • question_answer
    The moving fan has a constant angular acceleration of\[\pi /6\]\[rad/{{s}^{2}}\]. If it starts from rest, the number of revolution it makes in one minute is

    A)  1600            

    B)  500

    C)  350              

    D)  150

    Correct Answer: D

    Solution :

    : For angular motion, \[\theta =\omega t+\frac{1}{2}\alpha {{t}^{2}}\] \[\theta =0+\frac{1}{2}\times \frac{\pi }{6}{{(60)}^{2}}rad\] \[\therefore \]\[2\pi \times \]Rotations made\[(N)=\frac{\pi \times 3600}{2\times 6}\] or Rotations made\[=N=\frac{\pi \times 3600}{2\times 6\times 2\pi }\] \[N=150\]


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