Kinematics describes motion; kinetics connects forces to motion.
1. Which statements characterize a mechanism?
2. Kinematics concerns the geometry of motion. Which quantities or characteristics fall within its scope?
3. External system analysis focuses on which part of a system?
What is a mechanism?
A combination of rigid and/or flexible bodies connected to do work with definite constrained relative motions.
What does external analysis study relative to the object of interest?
The environment outside the object's boundaries.
Which elements does external analysis identify?
The global function, environment, study boundaries, input/output parameters, and operating phases.
What distinguishes a structure from a mechanism?
A structure does not do work, and its parts have no relative motion.
How is a system’s degree of freedom defined?
The number of independent parameters needed to define its position uniquely at any instant.
How many degrees of freedom does a rigid object have in three-dimensional space?
Six: three translations and three rotations.
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