Recent content by richylai

Oh nevermind, I'm sorry, admin you may delete this post, I figured it out.

Homework Statement A flywheel with a radius of 0.300 m starts from rest and accelerates with a constant angular acceleration of 0.600 rad/s^2. a)Compute the magnitude of the tangential acceleration, the radial acceleration, and the resultant acceleration of a point on its rim at the...

Oh no... Looks like I have to use the quadratic formula for this... -.-'

Ah... dumb me... should've multiplied not divided by 60 -.-' Thank you again...

It seems like the approach is not working. So I first used Ac = V^2 / R and so first I did 400000 * 9.8 * .025 and square rooted the answer to get my Velocity then I divided it by .025 to get my omega which should be in rad/s right now, then I divided it by 2pi and divided it by 60 so that my...

Oh yea I was aware I had to do unit conversion, but thanks for bringing that up, and thank you for your help Hoot and berk.

Ah... Ok, I guess I have to do some kind of substitution.

I'm not sure but do I have to use Ac = V^2 / R ? Then, after solving for velocity, I would have to convert it to omega? w = V/R ?

I used the conservation of momentum equation, M neutron * Vi,n = M neutron * Vf,n + M boron * Vf,b Then I would use the KE equation .5(M neutron)(Vi,n)^2 = .5(M neutron)(Vf,n)^2 + .5(M boron)(Vf,b)^2 However, I realized that I would be messing with two unknowns and I have no idea how to...

Oh sorry I put this in the wrong subforum.

[SOLVED] Ultracentrifuge Problem Find the required angular speed (in rpm) of an ultracentrifuge for the radial acceleration of a point .0250 m from the axis to equal 400000g. g=9.8 m/s^2.

A neutron with a mass of 1.67×10^−27 kg and moving with a speed of 45000 m/s makes a head-on collision with a boron nucleus with a mass of 1.66×10^−26 kg. The boron nucleus is originally at rest. If the collision is perfectly elastic, what fraction of the neutron's original kinetic energy is...