When you lift an object by moving only your forearm, the mainlifting muscle in your arm is the biceps. Suppose the mass of aforearm is 1.20 kg . If the biceps is connected to theforearm a distance dbiceps= 3.50 cm from the elbow,how much force Fbicepsmust the biceps exert to hold a800 g ball at the end of the forearm atdistance dball = 37.0 cm from the elbow, withthe forearm parallel to the floor? How muchforce Felbow must the elbow exert?

Write an expression for ?Fy. Take upward to be thepositive y direction.

Express your answer in terms of some or all of thevariables Fbiceps, Felbow, mforearm, mball,and g.

?Fy=0= =

Write an expression for ?? about the elbow.

Express your answer in terms of some or all of thevariables Fbiceps, Felbow, mforearm, mball, dbiceps, dball,and g.

??=0= =