The Lid of a Grand Piano Is Propped Open as Shown

Short Answer

The lid of a grand piano is propped open as shown. Which arrow most closely approximates the direction of the force that the hinge exerts on the lid? Assume that the prop exerts a force in parallel to the prop's length. (Hint: Draw a torque diagram of the lid.)

A) A
B) B
C) C
D) D
E) E
F) F
T) T