A Boy Holds a 40-N Weight at Arm's Length for 10

Multiple Choice

A boy holds a 40-N weight at arm's length for 10 s.His arm is 1.5 m above the ground.The work done by the force of the boy on the weight while he is holding it is:

A) 0 J
B) 6.1 J
C) 40 J
D) 60 J
E) 90 J