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Chapter 4: Problem 10

The same bicycle tire pump is used to inflate a mountain bike tire to 40 psi and then a road bike tire to 100 psi. What difference would the user notice when using the pump on the two tires?

Short Answer

Expert verified
Answer: The main difference a user would notice when inflating a mountain bike tire to 40 psi and a road bike tire to 100 psi is that it requires more significant effort and force to inflate the road bike tire due to its higher tire pressure.

Step by step solution

01

Understanding Tire Pressure Measurements

Pressure is a measure of force exerted on a unit area and is measured in pounds per square inch (psi). The mountain bike tire needs to be inflated to 40 psi, and the road bike tire needs to be inflated to 100 psi.
02

Analyzing the Inflation Process

When using the pump to inflate the tires, the user needs to exert force on the pump to push air into the tires. As the tire pressure increases, more force is needed on the pump to maintain the flow of air into the tires.
03

Comparing the Inflation Forces

Inflating a mountain bike tire to 40 psi would require less force on the pump compared to inflating a road bike tire to 100 psi. The higher the pressure, the stiffer the tire becomes, and as a result, it becomes more difficult to pump air into the tire.
04

Describing the Difference Noticed by the User

When using the pump on the two tires, the user would notice a more significant effort required when inflating the road bike tire to 100 psi compared to inflating the mountain bike tire to 40 psi. The force needed to pump air into the road bike tire would be higher due to the higher tire pressure.

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