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1. |
A towed wheel with rolling radius of 0.35 m and normal load of 500 N requires a horizontal force of 50 N to move it forward. The vertical soil reaction against the wheel can be considered to act ahead to vertical line passing through the wheel at a distance of ________ |
A. | 3.18 * 10<sup>-1</sup> m |
B. | 3.5 * 10<sup>-1</sup> m |
C. | 3.18 * 10<sup>-2</sup> m |
D. | 3.5 * 10<sup>-2</sup> m |
Answer» E. | |