How Is the Net Gravitational Force Calculated in a Triangular Particle System?

AI Thread Summary
The net gravitational force on one particle in a triangular system of three identical spherical particles is calculated using the formula Fg = sqrt(3) Gm^2/r^2. Each particle experiences gravitational attraction from the other two, and the forces must be summed as vectors. The challenge lies in determining the gravitational force between each pair and using geometric principles to find the resultant magnitude. Understanding the vector addition of forces is crucial for solving the problem. This approach highlights the importance of geometry in calculating gravitational interactions in a triangular configuration.
Demonsthenes
Messages
6
Reaction score
0

Homework Statement



Three identical spherical particles of mass m are each located at the corners of an equilateral triangle with edge length r (each sphere is centered at each corner). Show the magnitude of the net gravitational force on anyone of the particles due to the other two particles is given by:

Homework Equations



Fg = sqrt(3) Gm^2/r^2

The Attempt at a Solution



Again... had no idea where to start.
 
Physics news on Phys.org
what's the gravitational force between each pair? and then sum the 2 vectors (i.e, 2 forces acting on 1 particle) using geometry to find the magnetude of the force.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top