Since it's accelerating, the net force is not equal to zero (vector). This means that the tension should be smaller than the weight of mass 2 — which it is. Solution to the Half-Atwood Machine ...

Do you need some practice with force diagrams for your introductory (or advanced) physics course? Here are three questions (and the last one is awesome) about the motion of a bike as it is pulled ...

THIS is a reprint in book-form, with additions, of a series of articles which appeared in Engineering in the autumn of 1906. Those who have had any experience of such work will know how tedious is ...