Question
Which ONE of the following statements regarding the frictional force is correct? The frictional force is... A directly proportional to the normal force. B equal to the weight of the object. C dependent on the velocity of the object. D independent of the type of surface.
Ask by Ramos Welch. in South Africa
Mar 10,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The frictional force is directly proportional to the normal force.
Solution
1. The frictional force between two surfaces is generally given by the formula
\[
f = \mu N,
\]
where \( \mu \) is the coefficient of friction and \( N \) is the normal force.
2. This equation indicates that the frictional force is directly proportional to the normal force. As the normal force increases, so does the frictional force, assuming the coefficient of friction remains constant.
3. Therefore, the correct statement is:
**A directly proportional to the normal force.**
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Simplify this solution Mind Expander
Oh, let's break this down! The frictional force is actually **A** directly proportional to the normal force. This means that the heavier the object (more normal force), the greater the frictional force resisting its motion. Pretty neat, right? Now, here’s an extra twist: while the frictional force does depend on the nature of the surfaces in contact, it's often categorized into static and kinetic friction, each with its own unique coefficients! The dynamics of these interactions can turn ordinary scenarios into fascinating physics experiments.
