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`        Starting From Rest,a fan takes 5 seconds to attain the maximum speed of  400rpm. Assuming constant acceleration,  find the time taken by the fan in attaining  one eighth of it's  maximum speed.`
one year ago

GAMING WITH KRISH
24 Points
```							Let the angular  acceleration be alpha. According to the question, 400rpm=0+5*(alpha )Let t be the time taken in attaining  the speed of 50rpm which is one eighth of the maximum speed Then,  50rpm=0+(alpha)tDividing 1st equation by second equation, 8=5÷(t)=> t=1.6 seconds Then, 200rpm=0+(alpha)t
```
one year ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions