Physics (AS & A Level) · May / June 2023 · Paper 21 · Question 2
9702
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A rigid uniform beam of weight W is connected to a fixed support by a hinge, as shown in Fig. 2.1. string horizontal ground fixed support hinge beam 0.50 m 0.10 m 0.20 m 0.40 m 0.30 N 4.8 N 30° spring W Fig. 2.1 (not to scale) A compressed spring exerts a total force of 8.2 N vertically upwards on the horizontal beam. A block of weight 0.30 N rests on the beam. The right‑hand end of the beam is connected to the ground by a string at an angle of 30° to the horizontal. The tension in the string is 4.8 N. The distances along the beam are shown in Fig. 2.1. The beam is in equilibrium. Assume that the hinge is frictionless.
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