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What is frictional force and its causes to increase or decrease?
Frictional force is a type of force that occurs when two surfaces come in contact and resist motion. It is caused by the microscopic roughness of the surfaces and the interlocking of their irregularities.
Frictional force is measured in units called Newtons (N). It can be measured using a device called a spring scale, which measures the amount of force needed to overcome friction and move an object.
The two types of frictional force are static friction and kinetic friction. Static friction occurs when two surfaces are not moving relative to each other, while kinetic friction occurs when two surfaces are in motion.
The amount of frictional force is affected by several factors, including the nature of the surfaces in contact, the force pressing the surfaces together, and the presence of any lubricants between the surfaces.
Frictional force plays an important role in daily life and many industrial processes. It allows us to walk, drive, and grip objects, and it also helps prevent objects from slipping or sliding. In industrial processes, frictional force can be both useful and harmful, as it can help with tasks such as braking and drilling, but it can also cause wear and tear on machinery.