Question

If you hold a 50 kilogram barbell above your head for 3 seconds and
the acceleration due to gravity is 9.8 meters per second per second, how
much work did you do?
OA) OJ
OB) 150 kg s
OC) 490 N
OD 1,470 NS

Answer 1

Answer:

c

if you calculate the net force you get 490 N