SAASTE Technology/Activities/Hydraulics

Systems & Control Grade 8 Hydraulic jack Syringes can be used to change the type & size of an input movement into a different output movement ACTIVITY 1 Set up the investigation illustrated by the drawing above: Use two 10-ml syringes with approximately 200 mm length of plastic tubing. Use water in the system. Use syringes A as the master cylinder. 1. Observe and write down what happens at syringe B: ....................................................................... 2. Compare the distances ....................................................................... ....................................................................... ACTIVITY 2 Repeat the investigation using a 60-ml syringe as the master and a 10-ml syringe as the slave. 2. Observe and note what happens. .The sringe are not equal ...................................................................... ....................................................................... 3. Choose the correct options. If the plunger of the master syringe is pushed down 10 mm, the plunger of the slave will have moved: A. 10 mm B. less than 10 mm C. more than 10 mm Complete the system diagram below: 1. How is the input size changed? ..10mm..................................................................... 2. How is the input type changed? ....less than................................................................... 3. How would you describe the mechanical advantage that we get from a hydraulic system? ....................................................................... ....................................................................... Author: Deon Kahn Editor: Osman Sadeck