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**1. Homework Statement**

Children in a tree house lift a small dog in a basket 5.05 m up to their house.

If it takes 221 J of work to do this, what is the combined mass of the dog and basket?

**2. Homework Equations**

work(J)= force(N)x Distance(m)

**3. The Attempt at a Solution**

W=FD........221J=F(5.05)m

I'm not sure how to start other than plug in the given variables with the equation I know. How would I get the combined mass?