I thought about this for a while. I realize now what is going on. I know this is an ancient post, but I read a lot of the old ones, so hopefully this will clarify things for some readers.
At equilibrium (i.e. when the block is at rest and gravity is balanced by the spring) the stretch of the...
Not sure if anyone cares, but to measure the temperature outside with this equipment, one could determine the speed of sound, which varies with temperature according to v=332m/s + 0.59T, where T is the temperature in degrees celcius.
Using the equipment, clap the boards about 200m from a...
The answer is R/r = 3
The stack sets up a tetrahedron between the centers of mass of each of the 4 balls. The weight of upper ball is split between each of the 3 supporting balls along the edges of the tetrahedron. If you traveled down one edge of the tetrahedron, you'd reach the center of...
I solved this question and got the coefficient of static friction to be 1.3. Is this what you found?
I have a conceptual problem with this question. How can the blocks both be released up the slopes at the same time if they have the same coefficient of friction and the same pulling force up...
I don't understand the question itself. If you hold the string end still, the large mass will fall and pull the small mass up. What are they actually asking you?
I just read what you wrote for givens again. Are you asking what a is for each mass if 120N of tension?
If so, simply apply F=ma...