Post a New Question
posted by Sabrina on Tuesday, April 23, 2013 at 5:53pm.
Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.
Power = F*d/t = mg*d/t =(60*10)*1.2/1.5 = 480 J/s = 480 Watts.
More Related Questions