A counterwight of mass m 4.00 kg is attached to a light cord that is wound around a pulley. The pulley is a thing hoop of radius R8.00 cm and mass M 2.00 kg. The spoke have negligible mass. a) What is the magnitude of the net torque on the system about the axle of the pulley?b) When the counterweight has a speed v, the pulley has an angular speed wv/R. . Determine the magnitude of the total angular momentum of the system about the axle of the pulley.c) Using the result from part b. and torquedL/dt, calculate the acceleration of the counterweight.
i did the same thing with oil. darn oil. forgot the stove was on and went to the other room, then went back down the hall where i thought to myself 'i dont remember leaving the kitchen light on.' the oil had caught fire! i didnt know what to do. i woke up my bf and he got the flames down but we still called the fd. so much drama. what a day
When I was younger (I think 10), made a torch and I was running around like crazy in the back yard and there was all this smoke. Of course, I was panicking but then I remembered a part from *cough* Pokemon where they got rid of the fire by throwing dirt on it. And it worked! XD I didn't nearly die, but if my parents found out, they would have killed me.
One time I was 6 and I thought I could cook Top Ramen with out my mom's help there was a napkin and some of my parents old bills on the counter I turned the burner on and I turned around because my dog came in then I turn back and the whole counter was on fire! I grabbed the pot full of water and dumped it on the counter I was grounded for 3 weeks with no television.
a) Torques on the axle 4 * 9.81 * 0.08 m-N 3.1392 m-N. b) Angular momentum of the system angular momentum of the counterweight + angular momentum of the pulley L [4 * w * (0.08)^2] + [2 * (0.08)^2 w] 0.0384 w kgm^2/s c) Torque dL/dt 3.1392 d/dt (0.0384 w) dw/dt 3.1392/0.0384 rad/s^2 angular acceleration, dw/dt 81.75 rad/s^2 acceleration of the counterweight dw/dt * R 81.75 * 0.08 m/s^2 6.54 m/s^2.
