Sign In

Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.

However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it instrumental in understanding the relative position. The velocity of point B is then calculated as a vector sum of the absolute velocity of point A and the relative rotational velocity of point B with respect to point A. The relative velocity of point B is made up of two terms.

The first term represents the velocity components of point B, but relative to the rotating frame of reference. The second term, on the other hand, signifies the rate of change of the unit vectors of the rotating frame. This can be expressed in terms of angular velocity.

Therefore, in conclusion, the absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame. This comprehensive approach allows for a more accurate and nuanced understanding of the movements within the system.

Tags
Relative Motion AnalysisRotating AxesPosition VectorsLinear MotionReference FrameVelocity Vector SumAbsolute VelocityRelative VelocityAngular VelocityComplex MovementComponent Dynamics

From Chapter 15:

article

Now Playing

15.8 : Relative Motion Analysis using Rotating Axes

Planar Kinematics of a Rigid Body

372 Views

article

15.1 : Planar Rigid-Body Motion

Planar Kinematics of a Rigid Body

301 Views

article

15.2 : Rotational Motion about a Fixed Axis

Planar Kinematics of a Rigid Body

275 Views

article

15.3 : Kinematic Equations for Rotation

Planar Kinematics of a Rigid Body

252 Views

article

15.4 : Absolute Motion Analysis- General Plane Motion

Planar Kinematics of a Rigid Body

155 Views

article

15.5 : Relative Motion Analysis - Velocity

Planar Kinematics of a Rigid Body

298 Views

article

15.6 : Instantaneous Center of Zero Velocity

Planar Kinematics of a Rigid Body

363 Views

article

15.7 : Relative Motion Analysis - Acceleration

Planar Kinematics of a Rigid Body

273 Views

article

15.9 : Relative Motion Analysis using Rotating Axes - Acceleration

Planar Kinematics of a Rigid Body

254 Views

article

15.10 : Relative Motion Analysis using Rotating Axes-Problem Solving

Planar Kinematics of a Rigid Body

314 Views

article

15.11 : Equation of Motion: Rotation About a Fixed Axis

Planar Kinematics of a Rigid Body

159 Views

article

15.12 : Equation of Motion: General Plane motion

Planar Kinematics of a Rigid Body

175 Views

article

15.13 : Equation of Motion: General Plane motion - Problem Solving

Planar Kinematics of a Rigid Body

127 Views

JoVE Logo

Privacy

Terms of Use

Policies

Research

Education

ABOUT JoVE

Copyright © 2025 MyJoVE Corporation. All rights reserved