There is an Atwood's machine. The masses of blocks A and B are m_A and m_B, respectively, the moment of inertia of the wheel about its axis is I, and the radius of the semicircle in which the string moves is R.
Known: m_A > m_B
a)Find the magnitude of the linear acceleration of the block...
Prove that \frac{|B|A+|A|B}{|A|+|B|} is the bisector of the angle formed by A and B. where i have used normal text for vector and abs value bars to represent magnitude of vector.
i have no clue how to get started on this. i have tried many approaches such as constructing a triangle with a, b...
This is what I have and I have a feeling that I do not understand.
11. A box with a mass of 22 kg is at rest on a ramp inclined at 45 (degrees) to the horizontal. The coefficients of friction between the box and the ramp are: (mu(s): o.78 and mu(k): o.65)
a) Determine the magnitude of the...
Can someone please help me out with this problem? I am not sure if what I am doing is right
The question:
The resistance of the moving coil of the galvanometer G in Fig. 26.63 is 43.0 ohms, and the galvanometer deflects full scale with a current of 0.0295 A. When the meter is connected to the...
Hey I've been practicing these example questions that our lecturer gave us as part of the preparation for the upcoming exam. I'd appreciate any help. I find it really difficult to do his work because his lecture notes barely explain anything. It would have been nice to have a textbook for the...
Hello everyone, I'm lost as usual. Because they are two sheets, infinite and nonconducting. I thought I would use this equation: E = \delta /(2Eo). But they give the separation which i don't see how that fits into this equation. I figured I could find the accerlation using F = MA. But...
In a figure a ladder 20 ft. long leans against a vertical frictionless wall And makes an angle of 53 degrees with the horizontal which is a rough surface. The ladder is in equilibrium. Its weight is 80 pounds and its center of gravity is in teh center of the ladder. Find teh magnitudes and...
Hey all,
First-time poster here, hope y'all can help me. I'm ok with 85% of my homework this evening, but this one darned problem keeps tripping me up.
Real quick, just to note, I'm still in high school, but this is Physics AP, so let me know if I'm in the wrong forum. Thanks!
(a)...