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![[Post New]](/templates/default/images/icon_minipost_new.gif) 24 Apr 2008 18:30:44 IST
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Two small spheres ,each having a mass of 20 g, are suspended from a common point by two insulating strings of length 40 cm each .The spheres are identifically charged and the separation between the balls at equilibrium is found to be 4 cm.Find the charge on each sphere?
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24 Apr 2008 19:44:17 IST
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here
takin three forces mg tension and electrostatic res.
equate d equation
thus
u get Tsin theta=mg
T cos theta=k q1q2/r^2
mg cot theta =k q1q2 /r^2
(theta is angle of string wid horizontal)
put values
cot theta can be caculated wid trigo
cheers
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nobody is wrong
even a stopped clock is right twice a day |
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24 Apr 2008 20:13:25 IST
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What u have posted i am not understanding
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24 Apr 2008 20:14:55 IST
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She is asking you to drax the FBD and then solve..
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24 Apr 2008 20:24:13 IST
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why r u saying like that dost
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24 Apr 2008 21:46:20 IST
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budokai is a buffoon.. dont bother
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Will nip in at times to solve problems :)
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24 Apr 2008 22:58:12 IST
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ques is just simmmmmmmmmmmmmmmmmple
draw fbd n u'll get wat i mean
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nobody is wrong
even a stopped clock is right twice a day |
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