Recent content by lu22

Thanks for all your help! I don't have the problem quite down yet but its due tomorrow morning and I can't stay up any later working on it. Thanks again, I definitely understand more than I did when I started!

okay now I'm completely stumped. I calculated h to be .028 but I don't know how to line up the right triangles to find the length of the pendulum.

so if i have 1/2mv2=mgh the mass can cancel out and i will have 1/2v2=gh would i then just fill in the given velocity and 9.8 for g to solve for the height? or where does the angle come in?

Okay, the velocity at the bottom of the swing is given as .55m/s and the velocity at the top is zero. The potential energy at the bottom would be zero and the kinetic energy at the top would be zero. the total energy of the system remains constant so the kinetic energy at the bottom should be...

Homework Statement There are 3 blocks, A B and C, arranged left to right. blocks A and C have masses of m and block B has mass of 2m. block A heads toward the other two with velocity v. determine the final velocity of each block after all subsequent collisions. assume all collisions are...

I'm still stuck, the only equation i could find that had anything to do with an angle was F = ma = mv^2 / r, but that is for uniform circular motion. any more help would be appreciated

Homework Statement The maximum speed of a pendulum is .55 m/s. if the pendulum makes a maximum angle of 8 degrees with the vertical what is the length of the pendulum? The back of the book says that the answer is 1.59m. Homework Equations Its in the chapter of our book entitled...

Homework Statement If a plane is flying level at 950 km/h and the banking angle is not to exceed 40 degrees what is the minimum curvature radius for the turn?Homework Equations possibly F = ma = mv2 / r ? The Attempt at a Solution no idea where to start on this one, not sure where the angle...