Question

A cook holds a 1.80-kg carton of milk at arm's length (see the figure below). What force FB must be exerted by the biceps muscle? (Ignore the weight of the forearm. Give the magnitude.)

An arm is extending horizontally to the left with a cutout that shows muscles in the upper arm. A carton of milk is in the hand, and an arrow labeled vector Fg points directly downward. A point on the person's forearm lies a horizontal distance of 25.0 cm to the right of the milk and a horizontal distance of 8.00 cm to the left of the elbow. An arrow labeled vector FB points from this point up and to the right at an angle of 75.0° from the vertical.

Answer 1