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1. |
If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, then___________________?_x005F_x000D_1) a force is required to move the body upwards_x005F_x000D_2) a force is required to move the body downward_x005F_x000D_3) the body will not be in equilibrium_x005F_x000D_The correct answer is? |
A. | only (1) |
B. | only (2) |
C. | both (1) and (2) |
D. | both (1) and (3) |
Answer» D. both (1) and (3) | |