Recent content by tommywan410

Along a streamline xy = 4, given u = 2x, v = -2y, I was trying to calculate the acceleration at three different points A(1,4), B(2,2), C(4,1), In my lecture notes, it is said that at A, the fluid is decelerating, at B, the acceleration is zero, and at C it is accelerating. However, i got some...

So, according to the graph, is it I-T-Tcos60=change of momentum of C in x-direction Tsin60= change of momentum of C in y-direction?? About speed of centre of mass, what is its relationship between the speed of C and I. I know the whole system velocity= I/3m

thx~ question 5, i already work it out myself! But for question 4, I know impulse=force x time. What really confuses me is how can I relate the impulse I given by the questions and ball C. Is it simply v(c)= I/m, or other equation? I would like to ask about the tension impulse, are those three...

I have two question that I don't know how to start. 1st question, three particles A, B and C of equal mass m lie on a horizontal suface at the vertices of an equilateral triangle; they are joined by light inextensible string. An impulse I is applied on C in the direction of BC. Find the speed...