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Asked by Sanjeev Last Modified
Answer 
Pooja R. Jain
In general, rolling is often considered easier than sliding when it comes to the motion of objects over a surface. This is because rolling involves less resistance and friction compared to sliding.
The primary reason for this is that the contact between the rolling object and the surface is distributed over a smaller area compared to the contact in sliding. When an object is rolling, only a small portion of its surface is in contact with the surface it's rolling on at any given time. This reduces the frictional force and allows for smoother motion.
On the other hand, sliding involves a larger area of contact between the object and the surface. This increased contact area leads to higher friction, making sliding more resistant and often more difficult than rolling.
Consider the example of a ball rolling compared to a box sliding. The ball, with its rounded shape, can roll smoothly with less friction, while the box, with its larger surface area in contact with the ground, might experience more resistance when sliding.
It's important to note that the ease of rolling or sliding also depends on factors such as the nature of the surfaces in contact, the presence of lubrication, and the shape and weight distribution of the objects. In various engineering applications and everyday situations, the choice between rolling and sliding is often made to optimize efficiency and reduce energy consumption.
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