Physics, asked by dhirajsingh1997, 1 year ago

two small spheres each having a charge +Q are suspended by insulating threads of length L from a hook.This arrangement is taken to a space where there is no gravitational effect,then the angle between two threads and the tension in each will be????

Answers

Answered by abhi178
127

Let two small sphere attached with insulating threads are making an angle 2\theta. so, angle made by each thread with vertical line is \theta. Let T is the tension in threads.

see free body diagram,

at equilibrium,

leftward force = rightward force

or, Tsin\theta=F_e=\frac{KQ^2}{x^2}

and upward force = downward force

or, Tcos\theta=mg

but according to question, gravitational effect is absent. so, mg = 0.

then, Tcos\theta=0\implies cos\theta=0

\implies\theta=90^{\circ}

hence, angle made by each thread with vertical is 90°.

so, angle between threads = 2 × 90° = 180° .

it means, both threads are formed 180° i.e., straight line.

so, separation between them, x = 2L

now, tension will be T = Fe = KQ²/(2L)²

= KQ²/4L²

Attachments:
Answered by Rithy01
48

Explanation:please refer the attached pic HOPE IT HELPS YOU

Attachments:
Similar questions