A 20-kg roller, of diameter 200 mm, which is to be used on a tile floor, is

Question:

A 20-kg roller, of diameter 200 mm, which is to be used on a tile floor, is resting directly on the subflooring 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 pushed to the left.

30°