When holding the $4\mathrm{.}5-lb$ stone in equilibrium, the humerus $H,$

assumed to be smooth, exerts normal forces $F_C$ and $F_A$ on

the radius $C$ and ulna $A$ as shown. $($Figure $1)$

Part A

Determine the force $F_C$ that the humerus $H$ exerts on the radius $C.$ Neglect the weight of the arm.

Express your answer to three significant figures and include the appropriate units.

Part B

Determine the force $F_A$ that the humerus $H$ exerts on the ulna $A.$ Neglect the weight of the arm.

Express your answer to three significant figures and include the appropriate units.

$F_A=$

Value

Part B

Determine the force $F_A$ that the humerus $H$ exerts on the ulna $A.$ Neglect the weight of the arm.

Express your answer to three significant figures and include the appropriate units.

$F_A=$ Value

Request Answer

Figure

Part C

Determine the force $F_B$ that the biceps $B$ exerts on the radius $C$ for equilibrium. Neglect the weight of the arm.

Express your answer to three significant figures and include the appropriate units.