Angular acceleration and rotational kinetic energy

Three objects are positioned along the x axis as follows: 4.4 kg at x = +1.1m, 3.7 kg at x = -0.80m, and 2.9 kg at x = -1.6 m. The acceleration due to gravity is the same everywhere. What is the distance from location of the center of gravity to the location of the center of mass for this system

A ceiling fan has five blades, each with a mass of 0.34 kg and a length of 0.66 m. The fan is operating in its "low" setting at which the angular speed is 9.4 rad/s. If the blades can be approximated as uniform thin rods that rotate about one end, what is the total rotational kinetic energy of the five blades?

A 50-kg rider on a moped of mass 75 kg is traveling with a speed of 20 m/s. Each of the two wheels of the moped has a radius of 0.2 m and a moment of inertia of 0.2 kg m. What is the total rotational kinetic energy of the wheels

During the spin dry cycle of a washing machine, the motor slows from 95 rad/s to 30 rad/s while the turning the drum through an angle of 402 radians. What is the magnitude of the angular acceleration of the motor?

... a) What is the magnitude of its linear acceleration? ... c) linear speed, (d) translational kinetic energy, (e) rotational kinetic energy, and (f) angular speed ...

... speed B. linear acceleration C. angular speed D. angular acceleration E. total ... 3. It is useful to see how the formula for rotational kinetic energy agrees with ...

... from rest and undergoing a constant angular acceleration for 0.25 ... seed not to slip during the acceleration period. ... What is the rotational inertia of this rigid ...

... from rest and undergoing a constant angular acceleration for 0.25 ... seed not to slip during the acceleration period. ... What is the rotational inertia of this rigid ...

...Angular acceleration α = 7.27 x 10-5/691200 = 10.52 x 10-11 rad/s2. Torque τ = Iα = 98.3 x 1036 x 10.52 x 10-11 = 1034 x 1025 Nm. b) Rotational kinetic energy...

... The rotational kinetic energy of a body is given by E ... Thus the loss in kinetic energy of the system is ... in 0.4 s, thus the constant angular acceleration of the ...

... A) rotational kinetic energy B) translational kinetic energy C) both a and b D ... A) constant velocity B) constant angular velocity C) zero acceleration D) net ...

... of inertia of the plate about its rotation axis (which I ... R is its radius, and α is its angular acceleration. ... block is equal to the final kinetic energy of the ...