Answer: A: 0 J
Explanation:
Work is defined as the force acting on object leading to displacement of that object.
As the worker uses 689.0 N of force to hold 10 stationary beams, there is no displacement of the object.
[tex]w=f\times s[/tex]
w = work done
f = force = 689.0 N
s = displacement = 0 m
Thus [tex]w=689.0\times 0=0Nm=0Joules[/tex]
