jbehrens40561 jbehrens40561 20-02-2024 Physics contestada A porter lifts a 20 kg suitcase from the platform and puts it on his head 2.0 m above the platform. If he walks 50 m with the load on his head, calculate the work done by the porter a) 0 J b) 980 J c) 2000 J d) 5000 J