A centrifuge rotor has a moment of inertia of 4.28×10−2 kg⋅m2 .How much energy is required to bring it from rest to 5520 rpm ?
A centrifuge rotor has a moment of inertia of 3.20 10-2 kg·m2. How much energy is required to bring it from rest to 5000 rpm? Please include formulas
In the diagram, Disk 1 has a moment of inertia of 4.20 kg · m2 and is rotating in the counterclockwise direction with an angular speed of 6.90 rad/s about a frictionless rod passing through its center. A second disk rotating clockwise with an angular speed of 8.50 rad/s falls from above onto Disk 1. The two then rotate as one in the clockwise direction with an angular speed of 2.80 rad/s. Determine the moment of inertia of Disk 2.
10-78 A centrifuge of moment of inertia 2.25 x 102 kg.m' rotating at 2.50 X 10 rpm is brought to rest by a constant frictional torque of magnitude 2.31 N.m. (a) What is the angular acceleration of the (b) How long does it take to come to rest? (c) How many revolutions does it make in coming to rest? centrifuge?
40. (II) Calculate the moment of inertia of the array of point objects shown in Fig. 10-53 about (a) the vertical axis, and (b) the horizontal axis. Assume m = 2.2 kg, M = 3.1 kg, and the objects are wired together by very light, rigid pieces of wire. The array is rectangular and is split through the middle by the horizontal axis. (c) About which axis would it be harder to accelerate this array? 3. (II) A centrifuge rotor...
The angular speed of a rotor in a centrifuge increases from 486 to 1430 rad/s in a time of 6.38 s. (a) Obtain the angle through which the rotor turns. (b) What is the magnitude of the angular acceleration?
A centrifuge rotor rotating at 9200 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 2.45 m⋅N. a) If the mass of the rotor is 3.23 kg and it can be approximated as a solid cylinder of radius 0.0950 m , through how many revolutions will the rotor turn before coming to rest? b) How long will it take?
A centrifuge rotor rotating at 9500 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 1.66 m⋅N . a). If the mass of the rotor is 3.42 kg and it can be approximated as a solid cylinder of radius 0.0720 m , through how many revolutions will the rotor turn before coming to rest? b). How long will it take?
Wind rotor of a wind turbine has total inertia 4820000 kgm2. The rotor rotates at nominal speed 17 rpm. The generator nominal power is 1.8 MW. What is the time needed to stop the rotating wind rotor using nominal generator torque? It is assumed, that no aerodynamic torque exists during the braking. (Give the answer of accuracy of at least three significant digits.) Kinetic energy Answer MJ Nominal torque of generator Answer kNm Required time Answer s
A.) If each of the three rotor helicopter blades is 3.75 m long and has a mass of 135 kg, calculate the moment of inertia of the three rotor blades about the axis of rotation. B.)How much torque must the motor apply to bring the blades from rest up to a speed of 4.1 rev/s in 7.6s ? If each of the three rotor helicopter blades is 3.75 m long and has a mass of 135 kg, calculate the moment of...