Eight books each 3.90 cm thick with mass 1.70 kg lie flat, Ask an Expert

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Q. Eight books, each 3.90 cm thick with mass 1.70 kg, lie flat on a table. How much work is required to stack them on top of each other?

Q. Children in a tree house lift a small dog in a basket 5.5m up to their house. If it takes 191 J of work to do this, what is the combined mass of dog and basket?

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