Home
Class 12
PHYSICS
The plates each of area A of a parallel ...

The plates each of area `A` of a parallel plate caoacitor are given charges `Q` and `-Q`. The plates are joined by a non-conducting spring of force constant `k`. The natural length of the spring is `d`, the inital separation between the plates. The left plate is connected to a vertical wall through a massless non-conducting rope and the right plate is connected to a block of mass `m` through similar rope. Assume the pulley to be massless, neglect dielectric effect of the spring and `Q^(2) lt 2mAepsilon_(0)g`.
If the block is released from rest, the maximum elongation of the string is

A

`(2)/(k)(mg-(Q^(2))/(Aepsilon_(0)))`

B

`(2)/(k)(mg-(2Q^(2))/(Aepsilon_(0)))`

C

`(2)/(k)(mg-(Q^(2))/(2Aepsilon_(0)))`

D

None of these

Text Solution

Verified by Experts

Time period is not affected by a constant force acting along the line of `SHM`.
Promotional Banner

Similar Questions

Explore conceptually related problems

The plates each of area A of a parallel plate caoacitor are given charges Q and -Q . The plates are joined by a non-conducting spring of force constant k . The natural length of the spring is d , the inital separation between the plates. The left plate is connected to a vertical wall through a massless non-conducting rope and the right plate is connected to a block of mass m through similar rope. Assume the pulley to be massless, neglect dielectric effect of the spring and Q^(2) lt 2mAepsilon_(0)g If T be the time period of oscillation, then

The plates each of area A of a parallel plate caoacitor are given charges Q and -Q . The plates are joined by a non-conducting spring of force constant k . The natural length of the spring is d , the inital separation between the plates. The left plate is connected to a vertical wall through a massless non-conducting rope and the right plate is connected to a block of mass m through similar rope. Assume the pulley to be massless, neglect dielectric effect of the spring and Q^(2) lt 2mAepsilon_(0)g If Q^(2)=2mAepsilon_(0)g , the elongation of the string is

Each plate of a parallel plate capacitor has a charge q on it. The capacitor is now connected to a battery. Now,

Two charged capacitors have their outer plates fixed and inner plates connected by a spring of force constant 'K'. The charge on each capacitor is q. find the extension in the spring at equilibrium

The separation between the plates of a charged parallel-plate capacitor is increased. The force between the plates

The electrostatic force between the metal plate of an isolated parallel plate capacitor C having charge Q and area A , is

Two large conducting plates of a parallel plate capacitor are given charges Q and 3Q respectively. If the electric field in the region between the plates is E_0 , then the force of interaction between the plates is

The electrostatic force between the metal plate of an isolated parallel plate capacitro C having charge Q and area A , is

What is the area of the plates of a 2 farad parallel plate air capacitor, given that the separation between the plates is 0.5 cm?

What is the area of the plates of a 2 farad parallel plate air capacitor, given that the separation between the plates is 0.5 cm?