PH-626
Moments
Physics · Secondary 3 · Medium · Moments
A 3.0 m long uniform plank of weight 400 N is supported at its ends by two vertical ropes at A and B. A 200 N box is placed 1.0 m from A. The plank is in equilibrium. Taking moments about B, what is the tension in rope A?
- 330 N
- 333 N
- 300 N
- 500 N
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