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Capítulo 11

Dinâmica dos Movimentos Rotacionais

Torque
Torque
Torque is an important quantity for describing the dynamics of a rotating rigid body. We see the application of torque in many ways in the world, such as ...
Cálculos de Torque Líquido
Cálculos de Torque Líquido
When a mechanic tries to remove a hex nut with a wrench, it is easier if the force is applied at the farthest end of the wrench handle. The lever arm is ...
Equação da Dinâmica Rotacional
Equação da Dinâmica Rotacional
Angular variables are introduced in rotational dynamics. Comparing the definitions of angular variables with the definitions of linear kinematic ...
Rolamento sem deslizamento
Rolamento sem deslizamento
People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a ...
Rolamento com deslizamento
Rolamento com deslizamento
Rolling with slipping is a physical phenomenon that occurs when a rolling object experiences both rotational and linear motion but also experiences ...
Trabalho e Potência para Movimento Rotacional
Trabalho e Potência para Movimento Rotacional
Work and power in rotational motion are completely analogous to work and power in translational motion. The total work done to rotate a rigid body through ...
Teorema da Energia Profissional para Movimento Rotacional
Teorema da Energia Profissional para Movimento Rotacional
The work-energy theorem for rotational motion is analogous to the work-energy theorem in translational motion. It states that the net work done by an ...
Momento Angular: Partícula Única
Momento Angular: Partícula Única
Angular momentum is directed perpendicular to the plane of the rotation, and its magnitude depends on the choice of the origin. The perpendicular vector ...
Momento Angular: Corpo Rígido
Momento Angular: Corpo Rígido
The total angular momentum of a rigid body can be calculated using the summation of the angular momentum of all the tiny particles rotating in the same ...
Conservação do Momento Angular
Conservação do Momento Angular
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Considering a system that consists of n ...
Conservação do Momento Angular: Aplicação
Conservação do Momento Angular: Aplicação
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Examples of such systems include a freely ...
Rotação do pião assimétrico
Rotação do pião assimétrico
By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if ...
Giroscópio
Giroscópio
A gyroscope is defined as a spinning disk in which the axis of rotation is free to assume any orientation. When spinning, the orientation of the spin axis ...
Giroscópio: Precessão
Giroscópio: Precessão
Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a ...
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