Design Technology · B3 Product

DTB3.3 — Mechanical systems application and selection

Design Technology · SL / HL · syllabus-mapped notes

1. DTB3.3.1

   Calculating mechanical advantage

   Mechanical advantage of a system can be calculated.

2. DTB3.3.2

   Calculating velocity ratio

   Velocity ratios for gear-, pulley- and belt-driven systems can be calculated.

3. DTB3.3.3

   Calculating efficiency

   Efficiency can be calculated.

4. DTB3.3.4

   Applying gear and belt systems

   Gear- and belt-driven systems are used to change the direction, speed, power and efficiency of a rotary motion.

5. DTB3.3.5

   Applying cams and followers

   Cams and followers are used to change rotary motion to reciprocating motion.

6. DTB3.3.6

   Applying levers

   Levers reduce the effort needed to exert a force and move a load.