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A Rock Climber Wears A 7.5 Kg Backpack While Scaling A Cliff. After 30 Min, The Climber Is 8.2 Meter Above The Starting Point. How Much Work Does The Climber Do On The Backpack? - Math Discussion

A rock climber wears a 7.5 kg backpack while scaling a cliff. After 30 min, the climber is 8.2 meter above the starting point. How much work does the climber do on the backpack?