Question

question45002722 4. SERCP11 4.A.P.073. Three objects are connected on the table as shown below. The coefficient of kinetic friction between the block of mam, and the m, -4.50 kg, m,- 1.10 kg, and m, - 2.40 kg as shown, and the pulleys are frictionless. My Notes Ask Your Teacher 0.40. The have made m 's (a) Draw a diagram of the forces on each object. Choose File No File chosen (b) Determine the acceleration of each object, including its direction. am magnitude ami direction am2 magnitude am2 direction am magnitude am direction ---Select ms? (c) Determine the tensions in the two cords. left cord right cord (d) If the tabletop were smooth, would the tensions increase, decrease, or remain the same? The tensions in the both cords will remain the same O Type here to search

Answer 1

a. Dia geam of forces on masses is - N₂ 1 T m2 m, = 4.50kg m₂ = 2.40kg m₂ = 1.long u= 0.490 - )*9.8 Equation of motion of my ma: miy-7, -0 Equation of motion of ma mal = T, - Tz-dimg — ☺ Equation of motion of my MgeTx-mog - on adding 0 and 4 we get (mitme + Mg) a= (m, - mg - dina? Q = (mi-merling lg. 14.50-2.40-0.4981.10, mitmetmy ( 4.50+ 1.40+ 1lo a = 1.91 mis2 ami - magnitude - 191 mipa ama direction - To downward ama - magnitude 1.91 mis? amg - digestion - To leftward ama - magnitude 1.91 ml ja am - direction - To ubward. from ez o Tio mi(9-0)4.50(9.8-1.91)= 35.5N from ex © Tas my carg)- 22.40(9.8 +1.91) = 28.1N Tensions in eeft cord = 35.5N In Right cord = 28.1N Tension in left cord will decrease and Tension in Right Cord will increase. C.