Question

heavy objects are moved using rollers or wheel​

Answer 1

Answer:

Then the rollers reduce friction, and the heavy object can be easily moved from one place to another. After hundreds of years, rollers were replaced by the invention of the wheel on an axle. A wheel is simply a refinement of the roller. These days, movers use a rack with wheels—called a dolly—to move heavy furniture.

Explanation:

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Answer 2

Explanation:

When it comes to moving big things, rollers are a time-tested solution. By breaking the gravitational bond between two surfaces (by being placed between the objects), rollers reduce friction—allowing seemingly unmovable objects to easily be moved from one point to another.

Rollers are basically a variation of the wheel. A key difference between rollers and wheels, however, is that while wheels are tall and narrow, rollers are short and wide. This difference in the surface contact area is the reason rollers are so strong.

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