Recent content by Atomicbomb22

Well, I varied the extension of the rubber band for each time I repeated the experiment. So it obviously won't go as high (if with 200J it goes 2.93m, with 150J it won't go 2.93m), and I didn't measure the new height. I think that's what you mean by amplitude. Guess I made a stupid mistake, I'll...

Yea i derived k from experiment, I just used 40 as an example. But the problem is that I only have the height attained (h) for one experiment. You think I need to redo the experiment or can I somehow derive height (h) with the the variables I know? Thanks for all your help so far.

I think you must use these equations for the questions: L=lw and you must know that I=mr^2. You must also use the analogous equations--similar to those in linear mechanics-- of rotational mechanics equations to solve the problem. Just plug in and solve.

Well my teacher said "efficiency" is: Energy in/Energy out Basically, I need to find out how much (as a %) the elastic band deviates from the ideal elastic band due to energy loss. My experiment is basically like this: m=0.00185kg g= -10ms^-2 h=2.93m k= -40.0 x= 0.064 Now...

Actually I think I figured it out. Should I do the following? Potential Energy of Spring=1/2kx^2 Potential Energy at cieling= mgh so I just compare the P.E of the spring and the PE of the elastic band at the cieling. The PE of the Spring> than PE at cieling because some energy is lost, and...

Homework Statement I am doing a lab experiment and the objective is to find the efficiency of an elastic band. Distance to ceiling=2.9m Mass of elastic band= 1.85g Force 2.6N (found using Newton meter) Extension: 6.4cm Homework Equations Well I am not looking for a solution, I...