Question

A) Draw the free body diagram. Pick a set of axis and justify them.

B) Draw another picture where you show forces only along the axes (either the foree their components, if they are acting at an angle)

C)Write Newton's laws and explain the steps

b. What is the teisill 30. 1 th 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° below horizontal, with 500 N of tension. Ellen's rope pulls toward the right, 25° below horizontal. a. What tension must Ellen maintain in her rope to keep the piano descending at a steady speed? b. What is the tension in the main cable supporting the piano?

Answer 1

15 500Ncos15 T'cos25 500Nsin15 500N TI T'sin25 500g Given figure 4900N FBD

from FBD: (500N)cos15-T'sin 25 T' tension in main cable T (500N)sin 15+T'sin 25 +4900N T-(500N)sin 15+(1143N)sin 25+4900N-5512 (500N) cos15-1143N sin 25