H2P-515
Conditions for equilibrium
H2 Physics · JC 2 · Medium · Conditions for equilibrium
A 1.2 m long uniform rod of weight 120 N rests with its lower end on rough ground and is held in equilibrium by a light string attached to its upper end. The rod makes an angle of 35° with the horizontal, and the string makes an angle of 55° above the horizontal. Using moments about the point of contact with the ground, calculate the tension in the string.
- 1.4 × 10² N
- 7.2 × 10¹ N
- 2.9 × 10² N
- 4.1 × 10¹ N
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