Sheepie
contestada

An 85 kg man pushes a 32,000 ton wall for 240 seconds, but it does not move. How much work does he do on the wall?

Respuesta :

He does no work because there is no displacement. (W=0)
feynman135
Work is force times distance, or W=Fd, so if d = 0 then work is also 0

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