Question

The ball is made to touch the +ve side and released,then it will perform oscillations touching the plate alternatively?If true?why so?If false?why so?

Answer 1

figure ?

Answer 2

@yrelhan4

Answer 3

@electrokid

Answer 4

*

Answer 5

CMON :/

Answer 6

when the ball is made to touch the positive plate, the ball becomes positively charged.
it will perform oscillations, although not simple harmonic.
the net force on the ball in the horizontal direction would be
\[-mg \tan \theta - qE\]
This will drive the ball towards the bottom position.

Then during its upward journey towards the negative plate, force horizontally is
\[qE - mg \tan \theta\]

now, when it touches the negative plate, the ball becomes negatively charged.
and so on

Answer 7

@gauravchauhan