Children in a tree house lift a small dog in a basket 4.90m up to their house. If it takes 201J of work to do this, what is the combined mass of the dog and basket?

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  1. W=Fd

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  2. F=ma=mg

    now solve for W


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  3. W=ΔPE=mgh

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  4. 201/(9.82)(4.90)

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