posted by pete .
A fire helicopter carries a 555 kg empty water bucket at the end of a cable 20.9 m long. As the aircraft flies back from a fire at a constant speed of 38.4 m/s, the cable makes an angle of 38.3° with respect to the vertical.
A) After filling the bucket with sea water, the pilot returns to the fire at the same speed with the bucket now making an angle of 8.55° with the vertical. What is the mass of the water in the bucket?