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Posted by on Sunday, February 17, 2013 at 9:09pm.

. 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.

  • phy - , Sunday, February 17, 2013 at 9:26pm

    power=work/time=mgh/timeinsseconds

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