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1. |
*$_A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is? |
A. | 40 kg |
B. | 60 kg |
C. | 10 kg |
D. | 100 kg |
Answer» D. 100 kg | |