A picture is suspended by two wires of equal length. Each wire makes an angle θ with the horizontal.
a. Predict whether the tension in the wires will increase or decrease as the picture gets higher, i.e., the angle gets smaller. Explain.
b. Use the standard problem-solving strategy, find the tension T in the wire in terms of θ, the weight w, and any constants you need. Does your calculation support your prediction in part (a)?
c. Is it possible to hang the picture so that the wires don't sag at all, i.e., θ=0? Explain.