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![[Post New]](/templates/default/images/icon_minipost_new.gif) 16 Jun 2008 10:29:07 IST
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a wheel of mass 10kg and radius 0.2m is rotating at an angular speed of 100rpm, when the friction is turned . neglecting th friction at the axis calculate the force which must be applied tangentialy to the wheel to bing it to rest in 10rev. assume wheel to be disc]give solution
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16 Jun 2008 10:35:48 IST
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answer it
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16 Jun 2008 10:40:29 IST
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mr^2/2 . @ = F. r
mr@= 2F
F = 5pie/18 .
w = 100rpm
= 100.2pie/60 rad/s
= 10pie/3 rad/s
theta = 20pie
100pie^2/9 = 2@.20pie
@= 5pi/18 rad/s2
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16 Jun 2008 10:45:17 IST
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your answer is 8.888
but the correct answer is0.87
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16 Jun 2008 18:11:29 IST
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answer it
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16 Jun 2008 19:07:40 IST
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I HV THE ANSWER
BUT I WILL POST THE SOLUTION AFTERWARDS
GTG
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From shadows a light shall spring
Renewed shall be blade that's broken
The crown less again shall be king.
MY BLOG
http://my.opera.com/vu2rje/blog/ |
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16 Jun 2008 19:42:53 IST
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dwayne's answer is right,it is 0.87
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