An elephant lifts 7 large logs from the ground to a container 5 meters above the ground as part of a zoo demonstration. The elep hant exerted a force of 250 Newtons to lift each log. How much work did the elephant do altogether? A. 1250 J B. 1750 J C. 7880 J D. 8750 J
1 answer:
The work done by the elephant to lift one log is the force multiplied by the height at which the log has been lifted:
And so, the total work done to lift the 7 logs is 7 times the work done to lift each log:
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