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| Q.8 | The wheels on a drag racing car have a higher diameter at the end of a race than at the beginning. Which of the following is the least important factor contributing to this? | |
| Ans | 1. The weight of the car is reduced due to fuel consumption. | |
| 2. The tires heat up so the air inside expands. | ||
| 3. The tires rotate rapidly so the centrifugal force stretches them. | ||
| 4. Due to rubber fatigue the stiffness of the rubber decreases. |
Correct Ans Provided: 4
