Recent content by medicle

never mind

Homework Statement A ball attached to a string starts at rest and undergoes a constant angular acceleration as it travels in a horizontal circle of radius 0.30 m. After 0.65 sec, the angular speed of the ball is 9.7 rad/s. Determine the magnitudes of the ball’s tangential, centripetal, and...

i jumped around using a couple different avenues of approach.

roger, thank you for the help. I believe i stumbled my way through the problem, with a little guidance. You all are great.

1/2mvi^2/1/2mv1f^2+1/2m2=v2f^2 vf=.77 ? 2+.77=2.7 vy=2.7 4-.77=3.23 vx=3.23?? is that really how you do this?

so 1.28=.3v v=4.26 how do I achieve an x and y component from there.knowing that the answer is vx=3.3 vy=2.7

you will have to excuse my ignorance. if I draw the right triangle I would get two sides..5(2) and .2(4) a^2+b^2=c^2 gives me 1.28 which is the magnitude of the hypotenuse correct?

Homework Statement .5kg bomb sliding west frictionless pond at 2 m/s. after explosion .2kg piece moves south at 4.m/s what are the components of the .3 kg piece.Homework Equations I attempted to use mv1cos+mv2cos=2mvf mv1sin -mv2 sin=2mvf The Attempt at a...