How Can I Find the Center of Gravity for a Uniformly Distributed Mass?

AI Thread Summary
To find the center of gravity for a uniformly distributed mass, one can use the centroid approach by calculating areas instead of mass, as both yield the same results. Since the mass is uniformly distributed, assuming a constant mass density allows for simplification, where the mass terms will cancel out. The equation Σmixi/Σmi is applicable, but in this case, it is more effective to focus on area calculations. This method provides a straightforward solution to determining the center of gravity. Understanding these principles is essential for solving similar problems in physics and engineering.
bmandrade
Messages
63
Reaction score
0

Homework Statement


i need to find the center of gravity of the attached shape


Homework Equations



i know that in order to find center of gravity i can use the equation \Sigmamixi/\Sigmami but for the case it doesn't work becasue i don't have mass of this shape it just says that the mass is uniformly distributed

The Attempt at a Solution


I have no clue how to solve it
 

Attachments

  • shape.jpg
    shape.jpg
    4.1 KB · Views: 384
Physics news on Phys.org
Find the centroid of the shape using areas instead of mass. When the mass is uniformly distributed, the results are the same. Or you could just assume a mass density of m per sq.cm, and the m's will cancel, right?
 
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