Force Analysis - University Physics I - Quiz 4 | PHYS 2050, Quizzes of Physics

Download Force Analysis - University Physics I - Quiz 4 | PHYS 2050 and more Quizzes Physics in PDF only on Docsity! PHYS 2050 Fall 2011 Quiz #4 - Force Analysis Instructions: answer all problems and show all relevant work needed to find solution. Circle your final answer. Some (possibly) useful equations and constants ΣF = ma ! Ff = μkN# Ff = μsN Problems: 1. (10 pts) Two objects are connect by a string of negligible mass which passes over a fully as shown below. Assume the incline plane is frictionless. First (a) draw a free-body diagram for each object and (b) find the magnitude of the acceleration for each object in terms of m1, m2, g, and θ. 2. (10 pts) Two blocks connected by a rope of negligible mass are being dragged by a horizontal force across a rough surface. Suppose F = 70.0 N, m1 = 6.0 kg, and m2 = 8.0 kg. The horizontal acceleration, a, of the system is 3.0 m/s2. First (a) draw a free-body diagram for each block and then (b) find the coefficient of kinetic friction between the blocks and surface (it’s the same for both). AOSD Quire kaon Z Tan We Mohr) 1% ry 6 tO \ Vera korn, &, Frat yote fu & MS acct p aay is equek bo MGS a awalwat om, ax - Aia= Agr = O ): y 2h = Tg = Bry © 2s x1 8Fe= MW, QsuO—T=a2M2 GG) O+@: | Maa Sm 8 a By hr Aone (Mam) a a= &§ 2S 8 ~My ) MA, + M2