2016

Question 1

What are the functions of bearings?

Answer 1

-it supports the weight of bike while allowing the wheel to spin
-reduces contact surface area and therefore energy loss
-reduces contact surface area so reduces friction
-reduces friction and therefore reduces wear on the shaft
-replace the worn bearing instead of parent part

Question 2

3 skills of a mechanical engineer

Answer 2

• use nodal analysis to determine the forces inside the members of the structure
• use stress calculations to determine appropriate dimensions for each member
• forming virtual stress tests on computer modelled designs

Question 3

2 knowledge points for a mechanical engineer

Answer 3

• knowledge of appropriate materials and their properties
• knowledge of pneumatic components