A grinding wheel is a solid, uniform disk of mass 2.50 kg and a radius 9.00 cm.  Starting from rest, what constant torque must a motor supply so that the wheel attains a angular speed of 126 rev/s in a time of 6.00 s.  (Idisk = (1/2)MR2)

Two equal forces are applied to a door.  The first force is applied at the midpoint of the door; the second force is applied at the doorknob.  Both forces are applied perpendicular to the door.  Which force exerts the greater torque?

A grinding wheel is a solid, uniform disk of mass 2.50 kg and a radius 9.00 cm.  Starting from rest, what constant torque must a motor supply so that the wheel attains a angular speed of 126 rev/s in a time of 6.00 s.  (Idisk = (1/2)MR2)

Jose works on an engineering team. He finds that his team’s approach to their work changes over time, and seems to go through iterative cycles. This appears to be an example of

When a rigid body rotates about a fixed axis all the points in the body have the same linear velocities, but different angular velocities.

A boy and a girl are riding on a merry-go-round that is turning.  The boy is twice as far as the girl from the merry-go-round’s center.  If the boy and girl are of equal mass, which statement is true about the boy’s moment of inertia with respect to the axis of rotations?

Consider a particle which is moving clockwise at a constant speed v in a circle of radius R centered at the origin of the coordinate system.  When the particle is at point P, which vector best represents the velocity? move-cw-circle.png

A girl rolls a bowling ball of mass 7.2 kg and a radius of 10.9 cm down a lane with a velocity of 6.6 m/s.  The moment of inertia of the bowling ball is I = 0.4MR2.  Find the rotational kinetic energy of the bowling ball, assuming it does not slip.

Donald’s supervisor is a good listener and always concerned for Donald’s well-being, but his supervisor rarely clarifies his role or communicates performance standards. The supervisor is likely high in ___________ and low in initiating structure.

Bill works long hours and seems to compulsively volunteer for overtime shifts whenever they are offered. In fact, he feels guilty if he doesn’t take overtime, no matter how many hours he has worked that week. Jim is very likely experiencing: