Forces of Tension?

Question

Two ropes are used to lower a 255 kg piano 5.30 m from a second-story window to the ground. How much work is done by T1, T2, and B (in Joules)?

Info about these forces [T1 and T2 are on opposite sides].
T1 has a force of 1830 N and is 60º above horizontal.
T2 has a force of 1295 N and is 45º above horizontal.
B has a vertical force of 2500 N.

Absolutely ANYTHING will help. Thanks!

Answer 1

You need to consider the product of the tension, and the distance moved ALONG the direction of the tension.
Work done by T1: -1830N*5.30m*sin 60º = -8400J
Work done by T1: -1295N*5.30m*sin 45º = -4853J
Work done by B: 2500N*5.30m*sin 90º = 13.250 kJ