Recent content by al_9591

Thanks for your reply. Just out of curiosity what would be the right system? I understand that dv/dt is zero because it refers to the resting piece of chain on the table. If the part v*dm/dt is the force required to stop the piece dm, then the equation d(mv)/dt=vdm/dt+mdv/dt takes into account...

Some problems I don't understand well, I usually try to solve them in different ways, this helps my understanding of the problem that is why I wanted to use L-x. Anyway, thanks for your approach on this problem, it helped me look at it from another perspective.

I have seen the solution for this problem but still there are some things I do not understand and would like clarification. In the equations below I understand that we use the chain rule on m and v but what I don't understand why m*dv/dt is 0, I don't think is because the acceleration of dm is...

Hi, I have been studying physics again and I was looking for a good introductory book for thermodynamics. I wanted to know if there is a book in thermodynamics that would be the equivalent to "An introduction to Mechanics" by Kleppner/Kolenkow, or "Electricity and Magnetism" by Purcell? These 2...

Thanks, I'll learn Python first then.

Hi, I am majoring in mechanical engineering, and I have to take my first programming class, I have 2 options, a course that teaches C and another Python. Which one should I chose for ME? why? Which one do you think is more helpful for a ME major and is going to help me more in my future ME...

Homework Statement How can I find the center of mass of a right triangle, of height h, length a, and mass m, without using calculus? Homework Equations The Attempt at a Solution I just need a hint on how to start please

Homework Statement 1. Homework Statement Why when a Tippe top is spun with high angular velocity, it spins until it lifts its body of the top off the ground with its stem pointing downward? Homework Equations The Attempt at a Solution The only reason I could think of was that...

Homework Statement Why when a Tippe top is spun with high angular velocity, it spins until it lifts its body of the top off the ground with its stem pointing downward? Homework Equations The Attempt at a Solution The only reason I could think of was that it's kinetic energy is...

Hi, when you say second equation do you refer to the equation: T-m3g=a2? Thank you for answering my question

Dynamics. Motion of 3 bodies Homework Statement Initially the system of masses is held motionless. All surfaces, and pulley are frictionless. At the instant after the system of objects is released, find the accelerations of m1, m2 and m3. Data: m1, m2 and m3 Homework Equations F=ma...