A weight lifter holds a 800 newton barbell over his head at a height of 6 meters. How much work does the weight lifter do on the barbell?
A. 4800 J
B. 0 J
C. 4800 W
D. 0 W

A weight lifter holds a 800 newton barbell over his head at a height of 6 meters How much work does the weight lifter do on the barbell A 4800 J B 0 J C 4800 W class=