Posted by bbragg on Thursday, October 17, 2013 at 3:50pm.
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, Thursday, October 17, 2013 at 4:39pm
power=work/time=mgh/time
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