True or False. Friction can be reduced by lubricating or changing the shape of objects.truefalse

Statement Analysis

The statement claims that friction can be reduced by lubricating or changing the shape of objects.

1. Friction Reduction through Lubrication:

   • Lubrication introduces a substance (like oil or grease) between two surfaces, which reduces the direct contact between them. This decreases the frictional force because the lubricant fills in the microscopic contours of the surfaces, leading to smoother movement. Thus, lubrication is a well-known method to reduce friction.

2. Friction Reduction through Changing Shape:

   • Altering the shape of objects can influence how they interact during movement. For instance, streamlined shapes reduce air resistance (a form of frictional force in fluids). However, changing shape can also influence how surfaces make contact with each other, potentially increasing or decreasing friction depending on the context.

Conclusion

Since both methods mentioned in the statement can indeed lead to a reduction in friction under certain conditions, the statement is considered True.

Therefore, the answer is True.