Rotating mass system with a forward velocity and acceleration

In summary, the problem involves a rotating body with a constant angular velocity and a linear velocity, undergoing an acceleration. The goal is to find the equation for the force vector placed on the axis of rotation. The solution involves considering the pivot point, using the torque vector and Newton's laws, and taking into account the inertial force and its direction. This problem is similar to the coriolis effect and pushing a spinning gyroscope in one direction.
  • #1
gmacmilla
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Homework Statement


I have a

solid rotating body with moment of inertia I rotating at a constant angular velocity w

body is spinning about an ideal bearing located at its CG, the system is also moving in straight line at a velocity v when it suddenly undergoes an acceleration a. I want to find an equation for the Force vector F placed on the axis of rotation by the accelerating rotating mass.
** angular velocity remains the same **

This problem has something to do with the coriolis effect and is similar to taking a spinning gyroscope and pushing it strongly in one direction. It puts a side force on your hand

Homework Equations



Not sure where to start. I have the angular velocity equations as well as the forward velocity and acceleration equations of . A good start would be helpfull please!


The Attempt at a Solution


 
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  • #2
Consider the pivot point of the rotating body. The torque vector, N, is related to the applied force by N = r x F where r is the distance from the pivot point to the center of mass of the system. Also, the acceleration is linear so Newton's laws become F - ma = m times the second time derivative of the postion vector relative to the moving reference frame, and a is the acceleration of the system. The ma term is an inertial force and not a real force and depends on the acceleration of the moving coordinate system. F = mg in this case and points vertically downward, and ma points in a horizontal direction. The effective force acting on the pivot point is the vector addition of these two components.
 

What is a rotating mass system with a forward velocity and acceleration?

A rotating mass system with a forward velocity and acceleration is a physical system in which a mass is rotating or moving in a circular or curved path while also experiencing a change in its velocity and acceleration in the forward direction.

What causes a rotating mass system to have a forward velocity?

A rotating mass system can have a forward velocity due to the application of a force, such as a push or pull, in the same direction as its movement. This force can come from an external source, such as an engine or motor, or from the internal forces of the system itself.

How does acceleration affect a rotating mass system?

Acceleration can cause a rotating mass system to change its velocity, either by increasing or decreasing its speed or by changing the direction of its movement. This change in velocity can be caused by a force, such as gravity or friction, acting on the system.

What are some real-world examples of rotating mass systems with a forward velocity and acceleration?

Examples of rotating mass systems with a forward velocity and acceleration include a spinning top, a carousel, a car moving around a curved track, and a planet orbiting around a star. These systems are constantly experiencing changes in their velocity and acceleration as they rotate and move in a circular or curved path.

How is the motion of a rotating mass system with a forward velocity and acceleration calculated and described?

The motion of a rotating mass system with a forward velocity and acceleration can be described and calculated using principles of rotational dynamics, such as angular velocity, angular acceleration, and torque. These concepts help to explain how the system's velocity and acceleration change over time due to different forces acting on it.

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