Pulley with Friction | 2 Blocks | Newton's 2nd Law | Dynamics

Показать описание

Problem statement: The two blocks shown are originally at rest. Neglecting the masses of the pulleys and the effect of friction in the pulleys and assuming that the coefficient of friction between block A and the horizontal surface are 𝜇𝑠=0.25 and 𝜇𝑘=0.20 , determine
(a) the acceleration of each block,
(b) the tension in the cable.

Answer:
Acc of a = 0.698 m/s² rightwards
Acc of b = 0.233 m/s² downwards
T = 79.8 N

*The new T is different from the old one (i.e., 79.8N instead of 81.75N) not only because of the new friction, but also because its moving, which incurs in having the negative mass times acceleration (Newton's second law) in the equation.

00:00 Problem Statement
00:45 Problem analysis
2:55 Free body diagram
05:00 Kinematic equations
06:30 Friction analysis
09:08 Will it move?
11:05 Updating analysis
13:12 Algebra to find acceleration
16:52 Algebra to find tension
17:13 Final thoughts and tips

To learn more please watch the video till end and if you have a question just ask in the comments section.
If you like the video, please SUBSCRIBE and don't forget to press the bell 🔔, 👍like, comment and share. ---------------------------
---------------------------
▶️Watch More Videos:
---------------------------
#dynamics #EngineeringHack #Forces #twodimensional #engineeringsolutions #engineeringaustralia #engineering #KinematicsofParticles #Kinematics #NewtonsSecondLaw