- Sep 19, 2000
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Well, I figured that I would give you guys a HT rant. As a bit of background, I am taking a physics 121 course (basic calculus based physics). Man, my teacher give use assignments that are unbelievably hard stuff that is impossible to do without a) A physics degree b) A tutor. Im just getting fed up with it.
So where is the HT part? Here is one problem that we where given A long uniform rod of mass M and length L is pivoted about one end by a horizontal, frictionless pin. The rod is released from rest in a vertical position. At the instant the rod is horizontal, find a) its angular speed, b) the magnitude of its angular acceleration, c) the x- and y-components of the acceleration of the center of mass, and d) the magnitude of the reaction force at the pivot.
Ok, first off, I know this is not a homework board, the assignment is due tomorrow so just don't say anything for however long you want, I really am not coming here to get answers, however if you want to take a stabe at it and then tell me, how long it took you to do the problem, and what you physics knowledge is I think it would be pretty interesting.
I am able to do 1 and 2 with the information provided in the book, but after that things just get hairy and I don't understand what the heck the teacher is talking about. We have just covered BASIC rotational kinematics in class. ie torque = r F sin (theta) and such. We get homework like this once a week and it is driving me insane (btw the is just problem 2 on the assignment, I dread to think what the last one is going to look like.)
So is this too hard for 121 level physics students? Or am I just whining? Oh, and good luck for those of you who dare to attempt it.
So where is the HT part? Here is one problem that we where given A long uniform rod of mass M and length L is pivoted about one end by a horizontal, frictionless pin. The rod is released from rest in a vertical position. At the instant the rod is horizontal, find a) its angular speed, b) the magnitude of its angular acceleration, c) the x- and y-components of the acceleration of the center of mass, and d) the magnitude of the reaction force at the pivot.
Ok, first off, I know this is not a homework board, the assignment is due tomorrow so just don't say anything for however long you want, I really am not coming here to get answers, however if you want to take a stabe at it and then tell me, how long it took you to do the problem, and what you physics knowledge is I think it would be pretty interesting.
I am able to do 1 and 2 with the information provided in the book, but after that things just get hairy and I don't understand what the heck the teacher is talking about. We have just covered BASIC rotational kinematics in class. ie torque = r F sin (theta) and such. We get homework like this once a week and it is driving me insane (btw the is just problem 2 on the assignment, I dread to think what the last one is going to look like.)
So is this too hard for 121 level physics students? Or am I just whining? Oh, and good luck for those of you who dare to attempt it.