1first one, time period= 2Π√(m/k)
[at equilibrium, Eq = kx
now displace the block by Δx, then, F' = Eq - k(x+Δx)
=> F' = -kΔx
=> acc = -(k/m) Δx ]
pb no1:
A four kg block carrying a charge of 50microC. is connected to aspring for which k=100N/m. the block lies on a frictionless horizontal track and the system is in a uniform electric field E=5*105V/m. if the block is released from rest when the spring is unstretched at x=0. find its period.
pb no2:
Three infinitely long linear charges of charge density λ,λ,-2λ. A point in space is specified by its perpendicular distance r1,r2,r3 resp. from the linear charges Prove that for the points which are equipotential :
r1r2/r32
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UP 0 DOWN 0 0 6
6 Answers
11for d second one,
I COULD NOT UNDERSTAND YOUR QUESTION... PLZ CLARIFY..
1for the second one i am getting something diff. --> r1.r2/r3^0.5
u sure abt the question...
i will tell how i procedd..
take electric field for each line charge at that specified point.. (gauss's law.. simple)
then V= ∫E.dr
ΣV=0 at that point..
