Lubricated refers to the application of a substance, like oil or grease, to reduce friction between surfaces in contact, enhancing performance.
Class 11 Physics explores Chapter 5, focusing on work, energy and power concepts. It covers definitions, calculations and practical applications essential for understanding mechanics and energy transformations in various scenarios.
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Lubrication is a key process in maintaining a machine that affects performance and smoothness. Once it is lubricated with oil, the machine minimizes friction between moving parts. Friction causes wearing and tearing on components that may slowly degrade, affecting the overall working of the machine. Applying a lubricant allows the surfaces of the machine to slide past one another more effortlessly, reducing resistance for smoother operations.
One of the main advantages of lubrication is the increase in mechanical efficiency. As friction decreases, less energy is wasted as heat, meaning that more of the input energy can be converted into useful work. This leads to a more efficient machine that can perform its tasks with less energy consumption. Although the mechanical efficiency improves due to reduced friction, the mechanical advantage remains unchanged. The ratio of the output force created by the machine to the input force applied on it is termed as mechanical advantage. This would indicate the magnitude to which a machine amplifies force, and lubrication doesn’t directly impact this property.
In short, proper lubrication improves a machine’s mechanical efficiency by reducing friction, hence causing it to work more smoothly while conserving energy.
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