Question

What two precautions will you take to ensure an accurate result in determining the coefficient of friction between two surfaces?

a) Ensuring the surfaces are clean and dry, Using an accurate measuring instrument
b) Applying extra force to the surfaces, Using surfaces with irregularities
c) Lubricating the surfaces, Using a rough measuring instrument
d) Increasing the temperature of the surfaces, Using a flexible measuring instrument

Answer 1

To accurately determine the coefficient of friction between two surfaces, ensure the surfaces are clean and dry and use an accurate measuring instrument.

Step-by-step explanation:

To ensure an accurate result when determining the coefficient of friction between two surfaces, it is essential to take certain precautions. First, one must ensure that the surfaces in contact are clean and dry; this prevents external materials from affecting the frictional force. Second, it is important to use an accurate measuring instrument to determine the forces involved. This ensures that the calculations based on these measurements provide a true representation of the frictional forces at play. These two precautions help maintain the integrity of the experiment and lead to more reliable results.