rotational motion Flashcards
angular speed
rate at which a body rotates around an axis
angular acceleration
rate of change of angular speed
tangential speed
instantaneous linear speed of an object directed along the tangent to the object’s circular path
centripetal acceleration
acceleration directed toward the center of the circular path
force
net force on an object directed toward the center of the objects circular path, maintains the objects circular motion
torque
the amount of force needed to push something about an axis
center of mass
the point at which all the mass of the body can be considered to be concentrated
moment of inertia
the tendency of a body rotating about a fixed axis to resist a change in rotational motion
tangential speed is greater where?
outside of circle
an object will fall over if its center of gravity is
not over an area of support
the rotational inertia of an object about a particular axis is greater when
most of the mass is far removed from the rotational axis
a good inclination of why a ball gains speed as it rolls down an incline involves the
torque that acts on it
rotational equilibrium
the net torque must be zero
counterclockwise
positive
clockwise
negative
