Recent content by Anadyne

If you think about universal gravitation, the force between the boulder and the Earth is bigger than the force between the pebble and the earth. Just from this you'd expect that the boulder would accelerate faster, but at the same time, it needs a larger force to be accelerated the same amount...

I think you mean a is equal to L/4. Where is the axis of rotation? The center of the square?

No, I disagree with his current answer. Dick, when using the conservation of energy, it doesn't matter which direction v is in. So there's no need to find a specific component of v.

I would do this problem with a more general equation like the conservation of energy (KE + PE = Etotal). It looks like the equation you gave was something that you didn't derive yourself and was specific to another situation. If you did derive this equation, rethink the velocity.

Can you justify why you did this? GM/R^2 - vf^2/R = a And later on, why is v0 = 0?

I think you're taking the integral as if it were E dE instead of ds (Compare with the case where if it were the integral of x dx, then the integral is x^2/2). E is a constant since it is "uniform", so you can treat it as a constant and pull it out of the integral. If you're only dealing with one...

This looks like a tedious conversion problem chemistry problem more than a physics problem. I really don't think this is one of the introductory physics topics.

A resonance is not a part of the diagram. The entire diagram is of one particular resonance. In order to draw a resonating wave, all you have to do for this situation (open and free ends) is make sure that the node is at the closed end and the antinode is at the free end. The first resonance...

Let's just try listing all the forces that are present (regardless of what they are actually doing). Then draw a free body diagram to figure out in which direction they point in. The centripetal force makes sure that these riders don't go spinning off in space. What keeps people in the same...

What are you finding the corrosion rate of? You didn't describe the problem at all.

That depends on how they're connected together. Are they all in a series?

Let ω=omega θ=theta, r' = dr/dt, r'' = d^2r/dt^2 (second derivative) Let R be the vector , and r be the length. I'm not sure how you got to Newton's second law but here's how my professor proved it: R can be broken down into x and y components as such: R = rcosθ*i + rsinθ*j (i,j, are unit...

Can I help you with whatever you're still confused about?

You're absolutely right. Use the x equation to find the initial velocity of M and m (when they are together). Then relate that velocity to the initial velocity of the bullet before it hits the block. Is there a specific place where you have trouble? Don't forget that you have to consider the...

Break the problem into three parts: 1) Initial conditions Find the center of mass of the olive-nut system. Because this is a 2-d problem, apply the center of mass equation for each direction: x direction, and y direction. 2) Movement Find out where the olive and nut moved to given the force on...