Difficult Eletrical angle force problem

In summary, two pith balls with equal mass and charge are discussed. One is suspended by a thread and the other is brought close to it, causing the suspended ball to hang at an angle of 30 degrees. The forces of gravity, electric, and tension are all in equilibrium. The free body diagram is used to determine the net force on the suspended ball and break it into its components. The weight of the ball is 9.8m and the other forces can be calculated using the equilibrium conditions. The formula F=kFaFb/dsquared is also mentioned.
  • #1
Shadowsol
22
0
1. Two pith balls each have a mass of 1 g. and equal charge. One pith ball is suspended by an insulating thread. The other is brought to 3 cm from the suspended ball. The suspended ball is now hanging with the thread forming an angle of 30 degrees with the vertical. The ball is in equlibrium with Fe, Fg, and Ft.
Calculate Fg, Fe, and the charge of the balls.


2. F=kFaFb/dsquared


3. I really have no idea how to start it. Is Fg just 9.8m? For the rest I don't know how to get the force.
 
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  • #2
Draw the free body diagram for the ball hanging from the ceiling at an angle of 30 degrees. Since it is not moving, it is a statics problem, and you know that the net force on the ball is...

Once you have all your forces, break them into their components.
 
  • #3
Shadowsol said:
Is Fg just 9.8m?
Yes, the weight (Fg) = mg, where g = 9.8 m/s^2.

For the rest I don't know how to get the force.
Draw a diagram showing all the forces acting on the suspending pith ball. Apply the equilibrium conditions and solve for the other forces.
 

1. What is an electrical angle force problem?

An electrical angle force problem is a physics problem that involves finding the magnitude and direction of the force between two charged particles that are not directly facing each other. It takes into account the distance between the particles, the magnitude of their charges, and the angle at which they are positioned.

2. Why are electrical angle force problems difficult?

Electrical angle force problems can be difficult because they require a strong understanding of vector mathematics and trigonometry. Additionally, the forces involved are often very small and require precise calculations, making them challenging to solve.

3. What are some real-world applications of electrical angle force problems?

Electrical angle force problems are used in many real-world applications, such as calculating the force between atoms in a molecule, determining the strength of the electric field in a circuit, and predicting the motion of charged particles in a magnetic field.

4. How can I approach solving an electrical angle force problem?

To solve an electrical angle force problem, it is helpful to draw a diagram and label all known values. Then, use trigonometric functions and vector mathematics to find the components of the forces and the resultant force. Finally, use the Pythagorean theorem and inverse trigonometric functions to find the magnitude and direction of the resultant force.

5. What are some tips for solving difficult electrical angle force problems?

Here are some tips for solving difficult electrical angle force problems:
- Break down the problem into smaller, more manageable parts
- Use vector diagrams to visualize the forces and their components
- Double-check your calculations and units
- Practice with various types of problems to improve your skills
- Ask for help from a teacher or tutor if you are struggling.

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