These two problems i have no idea how to do, please help me out.
1)Suppose that a binary star system consists of two stars of equal mass. They are observed to be separated by 300 million kilometers and to take 6.0 Earth years to orbit about a point midway between them. What is the mass of each?
2)What is the apparent weight of a 79 kg astronaut 4100 km from the center of the Moon in a space vehicle moving at constant velocity?
the radius of the moon is 1.74x10^6 m and the mass is 7.35x10^22kg.
thanks in advance.
1)Suppose that a binary star system consists of two stars of equal mass. They are observed to be separated by 300 million kilometers and to take 6.0 Earth years to orbit about a point midway between them. What is the mass of each?
2)What is the apparent weight of a 79 kg astronaut 4100 km from the center of the Moon in a space vehicle moving at constant velocity?
the radius of the moon is 1.74x10^6 m and the mass is 7.35x10^22kg.
thanks in advance.