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Solve the all part of following problem-

Problem- Two planets P1 and P2 orbit around a Star S in circular orbits with speeds v1=42.86 km/s, and v2=56.2 km/s respectively.

Part 1- If the period of the first planet P1 is 770 years what is the mass of the star it orbits around?

Part 2-(b) Determine the orbital period of P2.

I need help to solve the above problem.

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