Test Hints – gravity
... 2. Set the direction of motion as positive. It will either rotate clockwise or counterclockwise. If you pick the wrong direction your final answer will be negative, telling you that you did thing in reverse. But, the answer will be correct nonetheless. If it is not moving pick one direction to be po ...
... 2. Set the direction of motion as positive. It will either rotate clockwise or counterclockwise. If you pick the wrong direction your final answer will be negative, telling you that you did thing in reverse. But, the answer will be correct nonetheless. If it is not moving pick one direction to be po ...
Rotation slideshow File
... An ice skater goes into a spin with arms extended. In this position, she has a rotational inertia I = 6.8kg.m2. In this position she turns 8 revolutions in 5s. Find her angular velocity and angular momentum in this position. ...
... An ice skater goes into a spin with arms extended. In this position, she has a rotational inertia I = 6.8kg.m2. In this position she turns 8 revolutions in 5s. Find her angular velocity and angular momentum in this position. ...
No Slide Title
... The rotation in the horizontal plane is reduced to zero: There must have been a large net torque to accomplish this! (this is why you can ride a bike safely; a wheel wants to keep turning in the same direction.) The conservation of angular momentum not only holds for the magnitude of the angular mom ...
... The rotation in the horizontal plane is reduced to zero: There must have been a large net torque to accomplish this! (this is why you can ride a bike safely; a wheel wants to keep turning in the same direction.) The conservation of angular momentum not only holds for the magnitude of the angular mom ...
Slide 1
... What is the source of a rotating object’s angular acceleration? It can’t be just a force, because it matters where on the object that force is applied. The answer lies in the quantity called torque. ...
... What is the source of a rotating object’s angular acceleration? It can’t be just a force, because it matters where on the object that force is applied. The answer lies in the quantity called torque. ...
Review Set 3
... The external force of the hinges has zero lever arm with respect to the axis which passes through the hinges; thus there is zero external torque and the angular momentum is conserved. I p = 0.471kgm 2 ...
... The external force of the hinges has zero lever arm with respect to the axis which passes through the hinges; thus there is zero external torque and the angular momentum is conserved. I p = 0.471kgm 2 ...
L14_RigidBody
... Object’s “position” is the position of its center of mass Integration of differential mass times position in object Approximate by summing over representational particles in object ...
... Object’s “position” is the position of its center of mass Integration of differential mass times position in object Approximate by summing over representational particles in object ...
Precession
Precession is a change in the orientation of the rotational axis of a rotating body. In an appropriate reference frame it can be defined as a change in the first Euler angle, whereas the third Euler angle defines the rotation itself. In other words, the axis of rotation of a precessing body itself rotates around another axis. A motion in which the second Euler angle changes is called nutation. In physics, there are two types of precession: torque-free and torque-induced.In astronomy, ""precession"" refers to any of several slow changes in an astronomical body's rotational or orbital parameters, and especially to Earth's precession of the equinoxes. (See section Astronomy below.)