[Vật lý 10]CÂN BẰNG VẬT RẮN- Moment Lực (Chương 5 Bài 13 Phần 4)

Hello, I'm going to continue with the equation number 4 equation number 4 in the school 5 is about the power of the force and the equation of the equation of the equation number 4 it has content like this the light bodies abvc on this board the light bodies abvc are connected to each other and connected to the wall thanks to the boards at A applies a straight force with a mass of 1000 newton find the unit force of the bodies if alpha is equal to 30 degrees and beta is equal to 60 degrees alpha is equal to 30 degrees beta is equal to 60 degrees the unit force of the body is the unit force of the body on the body on the body is abvc the content of our lesson is just how much it is also quite simple now we go to the content of this equation, that is, the abvc is the wall abvc is the two light bodies it is said to be hard and light and it is connected to each other and this is it so you see that in this case people give the angle alpha is equal to 30 degrees alpha is equal to 30 degrees 60 degrees so it is clear that the triangle abc is the triangle square at A square at A now calculate the unit force it applies to the body abvc so you see that the object that people put on this A, the forces applied to A the forces applied to the point A means that the force P Pho the force P Pho the second is the unit force of the body abvc is the force of the body abvc here is the body abvc tb it's simple and of course this force P Pho affects this body abvc is a force ttc that is, it is directed to the point C , it is tc, it is directed to the point B, it is ttb and you see that if you believe it, you can apply the angle of the triangle to this point A . I will be very simple now you see now and the diagonal is in the direction of A and the center of it here is of course it is equal to the weight of B so the system of this object is due to that according to the Newton's law 2 according to Newton's law 2, the forces applied to this force applied to this point A is the force P Pho then tb tb tc tb tc