Recent content by cde42003

There really is no other information. That is why I was stuck. I can't see anyway to do the problem. Thanks for the help

Ok. So since the the change in force is proportional to the change in x: .06N = -k(.06 m) When I tried it this way, I got the answer to be 2.03 Hz which was incorrect. What Am I still not getting?

I am trying to follow you but I cannot think of how to find the spring constant from the given info. I do know how to find the frequency from the spring constant but I cannot get this far. What equation do I need to use for the spring constant? Thanks and I am not trying to get off without doing...

I have figured the first one out now. You had to take the value of h and divide by sin(30°) to get the answer. Can anyone help me on the second question? Thanks

On the first one I have tried the mechanical energy and have come up empty. Here is my work: 1. .5mv^2 + .5*I*omega^2 = mgh 2. I then substituted for I and omega to get: 3. .5mv^2 + 1/3mv^2 = mgh 4. h= (.8333*v^2)/g I get an answer of 2.125. Can you see where I went wrong? Thanks...

Review Questions- Need Help! A hollow sphere is rolling along a horizontal floor at 5.00 m/s when it comes to a 30.0° incline. How far up the incline does it roll before reversing direction? I am not sure how to start this problem. I know the answer is 4.25m but do not know/understand how...

Maybe I am missing something, but how can you use x = A \cos \omega t when you do not know either A or omega?

I need help on a couple of problems. 1. A block on a spring is pulled to the right and released at t= 0s. It passes x = 3.0 cm at t= 0.685s, and it passes x= -3.0 cm at t= 0.886s. What is the angular frequency? What is the amplitude? I know what equatios I need to use, but without...

Thanks for the help. I figured both questions out now.

I have a couple of questions. 1. Assume that the function x(t) represents the length of tape that has unwound as a function of time. Find theta(t), the angle through which the drum will have rotated, as a function of time. Express your answer (in radians) in terms of x(t) and any other...

Thanks to everyone. I got the answer.

quasar987, I am not following you. Can you explain your method in more detail? Any other options out there?

Two stars with the mass and radius of the sun are separated by distance 10*r_sun, measured between their centers. A 10,000 kg space capsule moves along a line between the stars. Suppose the space capsule is at rest 1.0 m closer to one star than the other. What will be the speed of the space...

Thanks, I figured it out now.

Can anyone help me out with the second half of this problem? I did it awhile ago and as I am trying to review for a test I can't remember how I solved it. You're 6.0 m from one wall of a house. You want to toss a ball to your friend who is 6.0 m from the opposite wall. The throw and catch...