2.2. Higher Pairs: Line or point contact

Try these first

1. 1.

   What is a higher pair?

   Hint

   Think about the type of contact between links.

2. 2.

   Name one example of a higher pair.

   Hint

   Consider examples from machines.

3. 3.

   What type of contact do higher pairs involve?

   • Surface contact
   • Line or point contact
   • No contact

   Hint

   Reflect on the definition of higher pairs.

4. 4.

   True or False: A cam and follower is a type of higher pair.

   • True
   • False

   Hint

   Consider what defines a higher pair.

5. 5.

   Design a mechanism using a cam and follower that could automate a simple task, like opening a door. Describe its operation.

   Hint

   Think about how cam shapes influence follower movement.

6. 6.

   Explain how the efficiency of a rolling wheel affects modes of transportation.

   Hint

   Consider the difference between rolling motion and sliding motion when analyzing efficiency.