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The driver applies the force shown in Figure 8 - AQA - GCSE Physics - Question 3 - 2023 - Paper 2
Question 3
The driver applies the force shown in Figure 8. The force produces a moment about the pivot. How could the driver increase the moment about the pivot without increa... show full transcript
Worked Solution & Example Answer:The driver applies the force shown in Figure 8 - AQA - GCSE Physics - Question 3 - 2023 - Paper 2
Step 1
How could the driver increase the moment about the pivot without increasing the size of the force?
Answer
The driver could increase the moment about the pivot by applying the force further away from the pivot. This increases the lever arm, which enhances the torque produced by the same force.
Step 2
Step 3
Explain why the distraction will increase the stopping distance.
Answer
When the driver is distracted, there is an increased thinking distance, meaning more reaction time is required before the driver applies the brakes. This additional time leads to a longer overall stopping distance as it combines with the braking distance, ultimately taking longer to come to a halt.
Step 4
Explain why the temperature of the brakes increases as they are used.
Answer
The temperature of the brakes increases as they are used due to the work done against friction when the brakes are applied. This friction converts kinetic energy into thermal energy, causing the brakes to heat up. Continual application of the brakes during a drive will cause this temperature to rise further as more energy is dissipated as heat.