Recent content by icf927

I got 3.44 m/s for part a and 15.6 rad/s for part b. is that what you got?

how do you go about solving part b though?

i got a velocity of 3.44m/s

Did you change the initial angular velocity from revolution/sec to rad/sec and then change the final answer back to revolutions/sec

I wrote up the equation and got Mgh=1/2mv^2+1/2Mv^2+1/2Iw^2+mgh where M=15kg and m=8kg. is this right?

I did it on paper just forgot to type it on here. When I include the first child on the left hand side, is that the right setup?

yes but I do not know how to use that to find the answers.

How do I do that?

(1/2(250kg)(1.9m)^2)(1.256637061rad/s)+((50kg)(1.9m)^2(3m/s/1.9m)=(1/2(250kg)(1.9m)^2+(40kg)(1.1m)^2+(50kg)(1.9m)^2)w2. solved for angular velocity(w2) and got 0.214rev/s. is this the right set up?

yes I plugged in the different radii. I just forgot to put a 1 and 2 behind them in the equations.

Homework Statement A horizontal cylinder on frictionless bearings has a moment of inertia of 0.8kg*m^2 and a radius of 22cm. A 15 kg mass is attached to a 8kg mass with a massless string wrapped around the cylinder. The string does not slip on the cylinder. If the 15 kg mass is released from...

Homework Statement A solid cylinder merry-go-round of mass 250kg and radius of 1.9m spinning at 1 revolution every 5 seconds has a 40kg child sitting at 1.1m from the axis. A 50kg child, running tangentially at 3m/s, jumps on the merry go round at the outer edge. What is the new rotation rate...