2 Block Pulley + External Force | Solving with Newton's Laws | Dynamics

Welcome to Engineering Hack! In today's video we are solving exactly the same question as last time, but with a different method. This is amazing practice for those of you who are comfortable with one method and want to understand the other better, or for those of you who are trying to solve the question for the first time (this way you can choose which method suits you best =] ). So instead of using the energy conservation, we'll only be using Newton's laws and the kinematic equations for bodies. The idea here is that a constant external force will cause a constant acceleration (F=ma, Newton's second law). If we find that acceleration, we can then find the velocity of block B, which is what we are after. This is because we know that the acceleration is telling us the rate at which the velocity is changing. Have a good before watching the video and let me know if you have any comments below! Problem statement: The system shown is at rest when a constant 250 – N force is applied to block A. Neglecting the masses of the pulleys and the effect of friction in the pulleys and between block A and the horizontal surface , determine, a) the velocity of block B after block A has moved 2 m b) the tension in the cable Answer: a) VB = 1.51 m/s upwards b) F = 96.0 N In this video: 00:00 Intro 00:28 Problem statement 01:12 Coordinate system 02:00 Free body diagram (FBD) block A 03:11 Free body diagram (FBD) block B 03:40 Algebra 05:12 Acceleration of block B 05:48 Finding the velocity of block B (part a) 07:06 Determining 𝜟y 10:04 Finding tension T (part b) 11:00 Final thoughts To learn more please watch the video till end and if you have a question just ask in the comments section. If you enjoyed this video, please SUBSCRIBE and don't forget to press the bell 🔔, 👍like, comment and share. --------------------------- ▶️ Please Subscribe:    / @engineeringhack   --------------------------- ▶️Watch More Videos: • 3 Block Pulley:    • Pulley with Friction | 3 Blocks | Newton's...   • Pulley-collar energy approach:    • Collar & Pulley | Solving with energy cons...   • Intro to pulley-collar problem:    • Intro to Collar & Pulley System | Accelera...   • Robot Arm circular motion:    • Circular Motion | Robot Arm | Dynamics   --------------------------- #engineeringdynamics #Engineeringuniversity #problemsolving #EngineeringHack #pulley #collarpulleysystem #collarsystem #collarproblem #pulleyenergy #collarenergy #dynamics #pulleyproblem #university