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A small cork block of mass m=1kg having ...

A small cork block of mass `m=1kg` having charge `q=-1C` placed on a rough horizontal surface and is connected to a vertical wall through an unstretched non conducting light spring of spring consant `k=9N//m` as shown in the figure. If a horizontal constant electric field `E=10N//C` is switched on then the maximum compression in the spring is `xm`. Find the value of `x`. (Take `g=10m//s^(2),mu=0.1`)

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Verified by Experts

The correct Answer is:
2
Applying work kinetic energy theorem
`|q|Ex-1/2kx^(2)-mumgx=0`
Putting the values we will get `x=2m`
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