Charge over an Insulating Plate

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A uniform charge density of 5.00 x 10–6 C/m2 is distributed over a large insulating plate, with a tiny charged bob connected to it by an insulating string at a 30-degree angle. The bob has a mass of 0.001 g, and the problem requires determining the charge on the bob. Participants express confusion about how to begin solving the problem and seek guidance on the relevant equations and concepts, particularly regarding the electric field near the plate's surface. Suggestions include considering the gravitational force and its components in relation to the charge. The discussion emphasizes the need for clarity on the setup and the relevant physics principles involved.
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Homework Statement



Charge is distributed uniformly over the surface of a very large thin
insulating plate to a density of 5.00 x 10–6 C/m2 . An insulating string
connects a tiny charged bob to the vertical plate as shown in the
diagram. If the mass of the object is .001 g and the string makes an
angle of 30o to the plate, how much charge is carried by the bob?

Homework Equations



I have no clue.

The Attempt at a Solution



No idea where I should start. Can someone point me in the right direction?
 
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AJDangles said:

Homework Statement



Charge is distributed uniformly over the surface of a very large thin
insulating plate to a density of 5.00 x 10–6 C/m2 . An insulating string
connects a tiny charged bob to the vertical plate as shown in the
diagram. If the mass of the object is .001 g and the string makes an
angle of 30o to the plate, how much charge is carried by the bob?

Homework Equations



I have no clue.

The Attempt at a Solution



No idea where I should start. Can someone point me in the right direction?
First explain where the string is attached to the plate.

Better yet, post an image of the diagram.
 
Diagram here:
 

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What is the Electric field near the surface of the plate?
 
SammyS said:
What is the Electric field near the surface of the plate?

Take the force of gravity times a component of the angle, multiply by the charge of a proton?
 

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