tension on a piano cable

[skinard360]

A 500 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. Bob's rope pulls to the left, 15 degrees below horizontal, with 500 N of tension. Ellen's rope pulls toward the right, 25 degrees below horizontal.

What is the tension in the main cable supporting the piano?

I found that the tension in Ellens rope was 533 N but I have no idea how to figure out the tension force in the main cable...can anybody help?? :confused:

[Andrew Mason]

A 500 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. Bob's rope pulls to the left, 15 degrees below horizontal, with 500 N of tension. Ellen's rope pulls toward the right, 25 degrees below horizontal.

What is the tension in the main cable supporting the piano?

I found that the tension in Ellens rope was 533 N but I have no idea how to figure out the tension force in the main cable...can anybody help?? :confused:What can you say about the horizontal components of the tension in the two ropes? (Hint:Does the piano accelerate horizontally?)

AM