Recent content by JohnnyLaws

This is the outline of the exercise I did on paper. So basically, my attempt to solve this involved writing the equations according to the reference frame I chose. The origin is the first charge. I began by putting the equations on paper: E = 0=> k*q*1/(x^2)+k*q*1/((x+d))^2 = 0, Note that 'x...

I already understood the exercise. Thanks for your help!

I don't understand How can I get the solution by calculating moment. How can I calculate a moment applied in this figure?

For the first two questions. Are you asking me relative to what referencial? If you are talking about the first referencial the x coordinate of the left edge is equal 7,5 and the right is equal to 15. If you are talking about the referencial in center of square but the y coordinate is in the...

Here it is the image of the statement: As I mentioned in the "relevant equations" section, my approach to solving this exercise involves calculating the difference between the centers of mass of the square and the triangle. Starting with calculation of center of mass for the square. Starting...

I think that explained all in "Relevant equations". Here is the image of this exercise: This is my Free Body Diagram:

I don't know why the image of the exercise doesn't appear. Here it is:

For a better understanding of this exercise here is the image illustrating the scenario described in the statement: So to solve this exercise I began by drawing a forces diagram: I believe I have explained everything in the "Relevant equations" section. What am I doing wrong? The book that...

I think I do. Basically I drew a cube after that I put the force of weight in center of mass, the force of the ballon above cube and a force in fulcrum pointing up. I think what I'm doing wrong is the cross product because in the equation of torques the unic variable is the position and position...

TL;DR Summary: When a cube is supported at the fulcrum and remains stationary due to a balloon exerting a force in the opposite direction of its weight. So the exercise is as follows: We have a homogeneous cube with an edge length of 2 meters, weighing 98N. On the other hand, we have a balloon...