why rollers are used for transporting login
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Rollers are used for transporting luggage because it decrease the friction between road & wheel, so it easy to carry luggage.
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Rollers are actually used for transporting logs of wood beacuse logs of woods are very heavy.
Logs of wood actually in rollers reduces friction between roller and floor and hence, allow easy movement to logs.
Logs of wood actually in rollers reduces friction between roller and floor and hence, allow easy movement to logs.
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