Acceleration of Elevator and Tension in Ropes Questions Solved | PHYS 1301, Exams of Physics

Download Acceleration of Elevator and Tension in Ropes Questions Solved | PHYS 1301 and more Exams Physics in PDF only on Docsity! PHYSICS 1301, EXAM 2, SUMMER 2015, DR. JATEEN GANDHI LAST NAME: FIRST NAME: _ A UH ID: _ Formula Sheet Paetore Relative Motion v? =p + 2a(e ~ Xo) > F = ma;W =mg A= AR + AyD Bech 46 2 13 = Vy + toy X= Xq + vot tzat = : = Acos@ = adjacent By = -By, 5 1. 2 fe Hats Fama Msn Asin @ = opposite Equations of Motion X—-Xy= 3 (vy t+ v)t aed ye 8 = tan? Ome Pug = x 3 Vy aed a= vi _Antr Rep = Macy = m—— Xcomp ar eo Pr T2 Unless noted ignore air Gavg = i ay = Projectile Motion resistance |4] = 4 = (42 + 42) 9 ar * dt a d distance Usea=—-g= “9815 re a speed = — AtB=(A,+B)E + a time Newton’s Laws (Ay BP veugtact MULTIPLE CHOICE: Choose the right answer and bubble it on the attached scantron, Answer all 12 questions (10 + 2 bonus). sy Rx = 309-520 1) The following four forces act on a 4.00 kg object: ft = -toon . cw) Fl = 300 N cast 7 E F2= 700 N north wre * “Fr. F3 = 500 N west 2 Fy, + Ry = Po-~hoo Fa = 600 N south . \ i) What is the acceleration of the object? S = oan. CR - | Zipe A) 224 N in a direction 63.4° north of west R: Rx Ry = 2 a B) 300 N in a direction 63.4° north of west - “A 8 "Aloo C) 300 N in a direction 26,6° north of west O= tas Ver = ) =~ 26- 224 N ina direction 26.6° north of west ~29 0 ¥ ¥ Problem AG in Test B. N ofw TE= Ma y 224 =4xq bon Das Sb ryan (7 PHON 2) An object is moving with constant velocity. Which of the following statements is true? A) A constant force is being applicd in the direction of motion. B) A constant force is being applied in the direction opposite of motion, ) There are no forces acting on the object. (Bye net force on the object is zero, T2090 Crews TL haw]. 3) Two masses are connected by a string which goes over an tt ideal pulley as shown in the figure. Block A has a mass of 3.00 kg and can slide along a rough plane inclined 30.0° to WP yore the horizontal. The coefficient of static friction between block er. A and the plane is 0.400, What mass should block B have in S ay order to start block A sliding up the ramp? \ od WemMes A) 3.15 kg tet : = @254ky Ws rqies Theo. = Pxa6) C) 4.30 ky Sar } key bol ache D)1.95kg For 3 ke block 255 EF Fy= N-Weos3d20- Ma Bxawx (os 30 > wa Sspronx =] AAs: m= OG xX 3b- je gon D feo > T-Wsinav-Sg20. > 72 ™ 3 x9:)\x Sindo 4 13) s Ts. Feraad. 25N From Wok @> F2Fy209 T-weo Tew 2} 25N= Mey 18) Mgz2- 4) A 7.0-kg object is acted on by two forces. One of the forces is 10.0 N acting toward the east. $ 4 Which of the following forces is the other force if the acceleration of the object is 1.0 m/s2 toward the east? y A) 6.0 N east DLE MN B) 3.0 N west € C2) C) 12 N east F lon CE = Ax\= FN. D) 9.0 N west lo-F = FN: €= 3 N C Tpwewreh 2). 5) A 60.0-kg person rides in an elevator while standing on a scale. The scale reads 400 N. The acceleration of the elevator is closest to 3.13 m/s2 downward. . B) 6.67 m/s2 downward. & Rodi se) en Ss cale =m. C) zero. = = Mm C-A), D) 9.80 m/s? downward. us & Lewd Wow = ma) Avy se mg —Masz m(q-), how = 60 C4-B1-4). As 3th m/s” w