12.2.1. Friction

Try these first

1. 1.

   Define skidding in the context of vehicles.

   Hint

   Think about what happens when tires lose grip.

2. 2.

   What is intended by the term coefficient of friction?

   Hint

   Consider how this value is used in calculations.

3. 3.

   What happens to friction on wet roads?

   • Increases
   • Decreases
   • Remains the same

   Hint

   Think about how water affects grip.

4. 4.

   The term 'slipping' refers to which of the following?

   • True
   • False

   Hint

   Reflect on the definitions provided.

5. 5.

   Considering a vehicle with a load of 2500 kg on a gravel road with a friction coefficient of 0.25 under rainy conditions, calculate the maximum frictional force and discuss its implications for safety.

   Hint

   Apply your formula and think about the context.

6. 6.

   How does changing the tire tread depth affect overall friction and safety in various weather conditions? Provide a detailed analysis.

   Hint

   Think about how tread patterns function in rain.