what is the answer of it PRELIMINARY PROBLEMSPartial solutions and answers to all Preliminary Problems are given in the back of the book.P2-1. In each case, construct the parallelogram law toshow FR = F, + F2. Then establish the triangle rule, whereFR = F, + F,. Label all known and unknown sides andinternal angles.P2–2. In each case, show how to resolve the force F intocomponents acting along the u and v axes using theparallelogram law. Then establish the triangle rule to showFR = F, + F. Label all known and unknown sides andinterior angles.F = 200 NF = 200 NF2 = 100 Nu15°70°/ 30°4545°(a)(a)F = 400 N70°F = 400 N130°F, = 500 N120°(b)(b)

Answered: Image /qna-images/answer/1850a9ae-9993-4d1e-8305-d374aafd17bc.jpg

P2–1. In each case, construct the parallelogram law to show FR = F1 + F2. Then establish the triangle rule, where P2–2. In each case, show how to resolve the force F into components acting along the u and v axes using the parallelogram law. Then establish the triangle rule to show FR = F, + F,,. Label all known and unknown sides and interior angles. FR = F, + F. Label all known and unknown sides and internal angles. F = 200 N F = 200 N F, = 100 N и 15° 70°% 30° 45° 45° (a) (a) F = 400 N 70° F = 400 N 130° F = 500 N 120° (b) и (h)