Question: A 20-kg roller of diameter 200 mm, which is to be used on a tile floor, is resting directly on the sub flooring as shown.

A 20-kg roller of diameter 200 mm, which is to be used on a tile floor, is resting directly on the sub flooring as shown. Knowing that the thickness of each tile is 8 mm, determine the force P required to move the roller onto the tiles if the roller is pulled to the right.

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