Answer
$16.872\ N.m$
Work Step by Step
Given:
Length of a bicycle pedal arm is $r=0.152\ m$
Downward acting force $F=111\ N$
Inclination angle $θ=90^{\circ}$
Therefore,
The magnitude of the torque is given by
$τ=Frsinθ$
$τ=(111 N)(0.152 m)(sin90^{\circ})$
$τ=16.872\ N.m$
