Olympic weightlifter Zoe Smith holds a 58 kg barbell over her head, 2.1 meters above the ground in 0.6 sec. She walks across the floor at a constant speed, holding the barbell at the same height. How much work does she do while walking?
a) 0 J
b) 58 J
c) 120 J
d) 720 J
e) 1990 J
Olympic weightlifter Zoe Smith holds a 58 kg barbell over her head, 2.1 meters above the...
Olympic weightlifter Zoe Smith lifts a 58 kg barbell over her head, 2.1 meters above the ground in 0.6 sec. How much power must she generate to lift the barbell from the ground? a) 0 W b) 58 W c) 120 W d) 720 W e) 1990 W