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A lamp hangs from the ceiling of the room by means of a rope. On the...

A lamp hangs from the ceiling of the room by means of a rope. On the rope a force is applied to the left, at an angle of 90º with the vertical, so that the rope forms an angle of 50º with the horizontal. At the bottom of the rope, 10 cm before the point where the lamp is hung, a second force is applied to the right, at a 90º angle with the vertical. The tension in the rope is 120N. Determine the weight of the lamp.

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