Use the worked example above to help you solve this problem. AW=49.9N (11.2lb) weight is held in a person's hand with the forearm horizontal, as shown in the figure. The biceps muscle is attachedd=0.03069m from the joint, and the weight isl=0.358m from the joint. Find the upward forceexerted by the biceps on the forearm (the ulna) and the downward forceexerted by the humerus on the forearm, acting at the joint. Neglect the weight of the forearm.

F	= N
R	= N

EXERCISEHINTS: GETTING STARTED|I'M STUCK!

Use the values from PRACTICE IT to help you work this exercise. Suppose you wanted to limit the force acting on your joint to a maximum value of7.8710²N.(a) Under these circumstances, what maximum weight would you attempt to lift? N (b) What force would your biceps apply while lifting this weight? N