college physics
posted by bbragg .
Show that 480W of power is expended by a weightlifter when lifting a 60kg barbell a vertical distance of 1.2m in a time interval of 1.5s.

college physics 
bobpursley
power=work/time=mgh/time
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Show that 480 W of power is expended by a weightlifter when lifting a 60kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.