Question

Question 26 Figure shows an illustration of a human arm while lifting a metal sphere of weight 37.8 N. The forearm is horizontal and the arm is in equilibrium. The main forces involved and their distances from the elbow joint are shown in the figure. elbow joint biceps muscle metal sphere 0.04 m forearm 0.15 m 18 N 0.46 m weight of the sphere Considering the moments about the elbow joint, calculate the size of the force $F$ at the biceps muscle, in units of newtons?

          Question 26
Figure shows an illustration of a human arm while lifting a metal sphere of weight 37.8 N. The forearm is horizontal and the arm is in equilibrium. The main forces involved and their
distances from the elbow joint are shown in the figure.
elbow joint
biceps muscle
metal sphere
0.04 m
forearm
0.15 m
18 N
0.46 m
weight of the sphere
Considering the moments about the elbow joint, calculate the size of the force $F$ at the biceps muscle, in units of newtons?