A thin long bar with axis of rotation through one end has a mass of 0.500 kg and a length of 10 cm. If your angular velocity is 25 rad/s, determine your rotational kinetic energy.

A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 270-mile trip in a typical midsize car produces about 1.64 x 109 J of energy. How fast would a 11.4-kg flywheel with a radius of 0.238 m have to rotate to store this much energy? Give your answer in rev/min.

The following figure shows the cross section of a cylinder of radius 8.8 m rotating about its axis at 4.0 rad/s. The speed of the point P is

0.711T TIN A disk with rotational inertia of 0.25 kg m² and radius 0.24 m rotates about a frictionless axis that passes through the disk perpendicularly through its center. A force of 50 N is applied tangentially to the edge of the disk. If the disk starts its : movement from rest, after it has rotated half a revolution, its angular velocity is: a) w = 8.6831 rad/s b) w=17.3662 rad/s c) w = 327.2396 rad/s d) w =0.0754 rad/s

A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 272-mile trip in a typical midsize car produces about 3.25 x 10° J of energy. How fast would a 18.3-kg flywheel with a radius of 0.303 m have to rotate to store this much energy? Give your answer in rev/min. Number i Units

A 70 kg disk is spinning about a vertical axis of rotation with a radius of 1.2 m and a rotational inertia of 0.45 mr2 and it has an initial angular velocity of 10 rad/s. An unknown mass falls onto the disk 0.8 m away from the axis of rotation. After the collision, the disk is now spinning at 6 rad/s. The rotational inertia of the mass is mr2. Calculate the unknown mass that falls on the disk.

a rotating wheel stores energy.  It rotates 400 rad/s to store 1.00 x 106 J. What is the moment of Intertia in kg x m2 ?

A machine has a rod-shaped steel blade that rotates about its center.  The mass of the blade is 0.75 kg and its length is 0.75 .  Calculate its rotational kinetic energy when the blade has reached its operating speed of 4000 rpm.

Do b,c,d

A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 131-mile trip in a typical midsize car produces about 3.01 x 10 J of energy. How fast would a 38.5-kg flywheel with a radius of 0.597 m have to rotate to store this much energy? Give your answer in rev/min. Number i jud eTextbook and Media Units >