Available online
Description
The programme uses several home experiment demonstrations to summarize and link together the main themes of the course.
The programme uses several home experiment demonstrations to summarize and link together the main themes of the course.
| Module code and title: | T231, Introduction to engineering mechanics |
|---|---|
| Item code: | T231; 16 |
| First transmission date: | 12-10-1975 |
| Published: | 1975 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:24:00 |
| + Show more... | |
| Producer: | Andrew Crilly |
| Contributors: | John Cannell; Paul Minton |
| Publisher: | BBC Open University |
| Keyword(s): | Cam experiment; Course themes; Equilibrium; Flow table; Home experiment kit; Momentum; Structure; Velocity curves; Whitworth Quick Return Mechanism; Windlass experiment |
| Footage description: | John Cannell introduces the programme. Paul Minton uses the home experiment flow table to demonstrate the motion of fluids, Minton reviews the streamline approach and contrasts it with the complex motion of particles in a fluid. John Cannell uses a Whitworth Quick Return Mechanism to discuss theoretical analyses of motion in mechanisms. John Cannell next demonstrates the 'cam' experiment, producing as a result a displacement V. time graph. On this he derives the corresponding velocity and acceleration curves Cannell demonstrates how a cam can be transmuted to a simpler form which is easier to analyze. Dick Fendrich uses the home experiment kit to review practical methods of analysing structures which are in static equilibrium. He goes on to describe a method for checking the analysis which is based on photoelasticity. Fendrich uses the windlass experiment to show that a body in motion can be in equilibrium. He then goes back to the 'cam' experiment to demonstrate that when forces are out of balance they lead to acceleration and change of momentum. Paul Minton uses the nozzle home experiment to trace change of momentum of flow of an imcompressible fluid. John Cannell examines compressibility effects in which there are internal energy changes in the system. The experiment makes it necessary to consider the energy quality measure - entropy and introduces the second law. Dick Fendrich uses the water wheel home experiment to trace energy flow through a water wheel. Pip Youngman demonstrates what can happen when designers forget any of the variables involved. He starts up a model pile driver which collapses due to vibrations. |
| Master spool number: | 6HT/71733 |
| Production number: | 00525_5116 |
| Videofinder number: | 2232 |
| Available to public: | no |
