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Three forces acting on a particle are in equilibrium. If the angle between the first force and the second force be 120 0 and that between the second force and the third force be 135 0 , find the ratio of their magnitudes.
cbse
class12
modelpaper
2005
sec-b
q25
math
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Jan 24, 2013
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fingeazy
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Jan 28, 2013
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Jan 24, 2013
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Apr 17, 2013
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A) Two point charges of values $q$ and $2q$ are kept at a distance d apart from each other in air. A third charge $Q$ has to be kept along the same line in such a way that the net force acting on q and $2q$ is zero. Calculate the position of charge $Q$ in terms of q and d. b)A capacitor of capacitance C is charged fully by connecting it to a battery of e.m.f āeā. It is then disconnected from the battery. If the separation from the plates of the capacitor is $b$ now doubled, what will be a) charge stored in the capacitor? b) potential difference across it c) field strength between the plates d) energy stored by the capacitor
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Jan 30, 2015
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Forces of magnitudes $3$ and $4$ units acting in the directions $\overrightarrow{6i}+ \overrightarrow{2j} +\overrightarrow{3k}$ and $\overrightarrow{3i}-\overrightarrow{2j}+\overrightarrow{6k}$ respectively act on a particle which is displaced from the point $(2,2,-1)$to$( 4,3,1)$. find the work done by the forces.
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Apr 4, 2013
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poojasapani_1
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