Question: A traveller walks (30 mathrm{~m}) along a train platform, dragging their suitcase behind them using a strap attached to the top. The traveller's hand is

A traveller walks $30 \mathrm{~m}$ along a train platform, dragging their suitcase behind them using a strap attached to the top. The traveller's hand is $0.25 \mathrm{~m}$ above the top of the suitcase, and the $0.80-\mathrm{m}$ long strap maintains a tension of $120 \mathrm{~N}$ as the suitcase is dragged. How much work does the strap do on the suitcase?

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