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Answered 2008-05-03 20:12:29
The center of mass is defined as x_CM = (m_1x_1+m_2x_2+...+m_nx_n)/(m_1+m_2+...+m_n), where the x_i are the (vector) location of the particles and m_i are their masses. If the object is a continuous media (not composed of a countable set of particles), we define x_CM=integral ( rho(x)*x dx) / integral ( rho(x) dx), where rho(x) is the density at point x and the integral is to be preformed over all of space (i.e. wherever rho is positive). If you have an object and want to practically find the center of mass. Attach a wire to some point on it and hang it from that point. Then draw a line straight down from the hanging point and threw the body. Do this a few times with different hanging points. The intersection of the lines is the center of mass.
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What is the center of the mass of an object?
the center mass of an object is in the center of such objects. you can find it by spining the object. :)
What affects an objects gravity?
The object's mass, and how far you are from its center of mass.
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In this case, the center of mass will be closer to the object with greater mass.
When the line of action of a force intersects the center of mass of an object can that force produce a torque about the objects center of mass?
no
Is the center of gravity located in the center of objects made of like material?
Only objects that have the exact size, shape, mass and density distribution can have the same center of mass. Any variation and the center of gravity would move. Furthermore, only objects that are geometrically symmetrical (think sphere) can have a center of gravity at their geometric center.
What instrument would be used to find the mass of objects?
Triple-beam balances will find the mass of various objects!
Were does gravity pull you?
Toward the center of mass of the object or objects attracting you. Gravity also pulls it/them toward the center of mass of you.
Explain how to calculate the position of the common centre of mass of the Earth-Moon system?
The distance from the center of mass to Earth, times the mass of the Earth, must be equal to the distance of the center of mass to the Moon, times the mass of the Moon. (For more than 2 objects, the calculation is somewhat more complicated - reading about "center of mass" can give you an idea.)The distance from the center of mass to Earth, times the mass of the Earth, must be equal to the distance of the center of mass to the Moon, times the mass of the Moon. (For more than 2 objects, the calculation is somewhat more complicated - reading about "center of mass" can give you an idea.)The distance from the center of mass to Earth, times the mass of the Earth, must be equal to the distance of the center of mass to the Moon, times the mass of the Moon. (For more than 2 objects, the calculation is somewhat more complicated - reading about "center of mass" can give you an idea.)The distance from the center of mass to Earth, times the mass of the Earth, must be equal to the distance of the center of mass to the Moon, times the mass of the Moon. (For more than 2 objects, the calculation is somewhat more complicated - reading about "center of mass" can give you an idea.)
Where does a black hole pull objects?
To its center of mass (the singularity)
How to detemine an objects mass?
use a scale to find the mass
Is it necessary to have matter at the center of mass?
No, many objects have no mass (at least no mass that is part of the body concerned) at their centre of mass. Not ,necessarily. Center of mass is an imaginary point.(at least no mass that is part of the body concerned)
Does a donut have a center of gravity?
All objects which have mass have a centre of gravity.
What is the point in an object that moves as if all the objects mass were concentrated at that point?
That's called the center of mass.
How can you find the center of mass of an object like a bottle rocket?
How can you find the center of mass of an object like a bottle rocket?
Why can a broom stand on it's own?
An object's center of mass accounts for why objects, like a broom, can stand on its own. Center of mass means that all of the object's mass is even around one center or point. "The center of mass of a body may be defined as the average location of the mass distribution."
What does an objects gravitational potential energy depend on?
Its mass and the distance from the center of the earth.
What statement about Gravity is always true?
Objects will always be pulled to the center of the mass.
How do you find the density of objects?
mass divided by volume... mass/volume=density
What is a barycenter?
That's the center of mass of two or more objects that orbit each other.
How the sun was formed at the center of the Solar System?
Well the Sun has the most mass in the entire solar system, so it would naturally be found in the center, with objects of lesser mass orbiting it.
How do you find the molar mass of an object?
Molar mass is a term applied for molecules, not for other objects.
Where will you find the center of gravity?
For two point masses of equal mass, the center of gravity is the center of mass and is located midway between the two point masses.
The average position of the distribution of the weight of an object is?
Center of gravity is the average position of the distribution of the weight of an object. For objects near the earth's surface, center of gravity is the same location as center of mass. This is because weight and mass are proportional.
What objects are measured in grams?
You use grams to find the mass of an object.
What metric unit would you use to find an objects mass?
The kilogram.
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