| Mechanism | Machine | Structure | |||||||||
| 1. There is relative | Relative | motion | exists | There | is | no | relative | ||||
| motion between the parts | between | parts | of | a | motion | between | the | ||||
| of a mechanism | machine. | members of a structure. It | |||||||||
| is rigid as a whole. | |||||||||||
| 2. A mechanism modifies | A | machine consists | of | A structure | does | not | |||||
| and transmits motion. | one or more mechanisms | transform motion. | |||||||||
| and | hence | transforms | |||||||||
| motion | |||||||||||
| 3. A mechanism does not | A | machine | modifies | A structure does not do | |||||||
| transmit forces and does | energy or do some work | work. | It | only | transmits | ||||||
| not do work | forces. | ||||||||||
| 4. Mechanisms are dealt | Machines | are | dealt with | Structures are dealt with | |||||||
| with in kinematics. | in kinetics. | in statics. | |||||||||
Comments are closed.