contestada

Thin rods A , B , and V all have uniform mass Distibution and are all of equal length . The center of mass of the three-rod system is shown above. If both A and C have a mass M , the ratio of the mass of bar B to the mass of bar A , Mb/Ma , is

Respuesta :

Answer:

Therefore, the ratio of the mass of bar B to the mass of bar A (Mb/Ma) is 1/2.

Explanation:

To find the ratio of the mass of bar B to the mass of bar A (Mb/Ma), we can use the principle of center of mass.

1. Since the center of mass of the three-rod system is shown above and the rods have a uniform mass distribution, the center of mass will be located at the midpoint of the system, which is the point between A and B.

2. As both A and C have a mass of M, the center of mass will be closer to A than to B. This implies that bar A has more mass than bar B.

3. Let's assume the length of each rod is L. Since all rods are of equal length and have a uniform mass distribution, the mass of each rod can be calculated as M/L.

4. The ratio of the mass of bar B to the mass of bar A (Mb/Ma) can be calculated as follows:

Mb/Ma = (Mass of bar B) / (Mass of bar A)

Mb/Ma = (M/L) / (2M/L) [As bar A has twice the mass of bar B]

Mb/Ma = 1/2

Therefore, the ratio of the mass of bar B to the mass of bar A (Mb/Ma) is 1/2.