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fv2146

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Everything posted by fv2146

  1. I'm totally clueless, I know I should get help from kinematics, that's it
  2. Block A weighs 100 lb. The coefficient of kinetic friction between Block A and the inclined surface (θ = 35°) is 0.15. What is the weight of Block B such that when the system is released from rest, Block A accelerates 5 ft/s2down the incline? What is the tension in the cable?
  3. Block A starts from rest and then starts moving up with a constant velocity of -4 m/s. At the same time, Block Bis moving down with velocity vB = 2 m/s and has acceleration defined by aB = -vB. At t = 3 s, what is the velocity (including direction) of Block C? How much (and in what direction) has Block C moved?I'm really clueless about this problem
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