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A capacitance balance is shown in figure...

A capacitance balance is shown in figure. The balance has a weight attached on one side and capacitor that has a variable gap width on other side. Assume the upper plate of the capacitor has negligibles mass. When the potential difference between the plates is `V_(0)`, the attractive force between the plates balance the weight of the hanging mass, Then:

A

Equilibrium of weight is stable

B

Equilibrium of weight is unstable

C

Value of `V_(0)` required to balance the weight is given by `V_(0) = d sqrt((2 Mg)/(espi_(0)A))`

D

for a small displacement block of mass M executes simple harmonic motion

Text Solution

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The correct Answer is:
B, C
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