# Homework Help: General Physics Question

1. Mar 16, 2009

### Enlighted One

1. The problem statement, all variables and given/known data

You are aboard Spaceship headed toward a planet. The planet utilizes a nearby compact gamma ray emitting black hole as a power and transportation source. You have been approaching Congress for a couple of weeks and obtained the below data.

1. Using the below data find the mass of the Blackhole. In order to answer this question, you will need to study the concept of “Reduced Mass”.

Black hole:http://www.geocities.com/dd40001/rap1.jpg
Planet:http://www.geocities.com/dd40001/rap2.jpg

2. Relevant equations
As far as a I know the only one is the reduced mass one, and possibly the one from de Brogeli one relating to wavelength

3. The attempt at a solution
I am having trouble even getting off the ground for this problem, if any one can just help me see the relevant way to get started I would greatly appreciate it.

2. Mar 16, 2009

### tiny-tim

Welcome to PF!

Welcome, O Enlighted One!
erm … enlighten us

what are those equations?

3. Mar 16, 2009

### Enlighted One

Reduced mass: $$m_\text{red} = \mu = \cfrac{1}{\cfrac{1}{m_1}+\cfrac{1}{m_2}} = \cfrac{m_1 m_2}{m_1 + m_2},\!\,$$

De Broglie's wavelength:$$\lambda = \frac{h}{p}$$

I don't see how to relate the data given to mass tough.