junior92 junior92

17-11-2017
Physics

contestada

A 95.0kg weightlifter pushes on a 800,000 kg wall for 400s but it does not move. How much work does he do on the wall?

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Kalahira Kalahira

25-11-2017

The weightlifter does no work. Although he has exerted force, work is the product of force over distance. Since he has not moved the wall he has done no work.

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