Answer:
τ = 0
Explanation:
The moment of a force is defined by
τ = F x r
where bold indicates vectors.
We can write this equation in module form
τ = F r sin θ
the amount without ea r is called the breaststroke and is the distance perpendicular to the pivot point.
The line of action of the force passes through the turning point whereby
r = 0,
Consequently the moment is also zero
τ = 0
