raghad272007 raghad272007

14-06-2022
Physics

contestada

A weight trainer lifts a 90.0-kg barbell from a stand 0.90 m high and raises it to a height of 1.75 m. What is the increase in the potential energy of the barbell-Earth system?

Respuesta :

ellie2yannahdibia ellie2yannahdibia

14-06-2022

Answer:

∆PE = 749.7 J

At 0.9 m high, PE = 793.8 J

At 1.75 m high, PE = 1543.5 J

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